Shinoda (篠田, Shinoda) is one of the main staff at the Kamogawa gym. He acts as the chief trainer and second of Aoki Masaru, Kimura Tatsuya, and Itagaki Manabu, and one of the seconds for Makunouchi Ippo and Takamura Mamoru's corner. Shinoda carries out Kamogawa Genji's tradition of strict training.
Shinoda and Fujii Minoru were friends who were amateur boxers partaking in city tournaments. One day after a spar, Shinoda announced to Fujii that he is going to turn pro, and looks forward to seeing him in the ring someday. However, Fujii revealed to him that he thinks he is done as a boxer. Shinoda thought they shared the same dream- To go to the Olympics or become a champion as a pro. Fujii instead wanted him to go and make that dream come true, while he decided to report on boxing instead. The two made a promise for Shinoda to become a JBC champion, then world champion, as Fujii writes about him as he makes his way up.
To begin their promise, Shinoda became a pro boxer. However, he lost his debut match and eventually retired after six matches and ending with an average record. He later joined the Kamogawa Boxing Gym and became a trainer.
When Kimura Tatsuya and Aoki Masaru joined the Kamogawa gym, Shinoda looked over their training. After eight months, Shinoda told the duo that their pro debut was scheduled. Shinoda then was their second for their pro debut, with both of them winning in the end.
Shinoda was one of Ippo's cornermen for his match against Sendō Takeshi.
When Aoki Masaru and Kimura Tatsuya were sparring for each other's matches, Shinoda was watching them and gave tips. Shinoda was one of the cornermen for Aoki, Kimura, and Takamura Mamoru's matches, which all three won. When the Nakadai Boxing Gym requested for Ippo to fight Okita Keigo, Shinoda was one of Ippo's cornermen for the match which Ippo won.
Shinoda was the second for Aoki's semifinal match of the Class A Tournament against Jackal Itō, and Kimura's semifinal match of the Class A Tournament against Ryūzaki Takeshi. Both of their matches resulted in a loss, losing the Class A Tournament. Shinoda was one of Ippo's cornermen for his match against Alexander Volg Zangief.
When the Champion Carnival began, Shinoda was one of Takamura's cornermen for his title defence against Tamaki Atsushi. The match resulted in Takamura's win. Ippo was scheduled to face against champion Date Eiji for the Champion Carnival, and when the match began, Shinoda was one of Ippo's cornermen. The match resulted in Ippo's loss.
When Kamogawa collapsed due to overwork and went to the hospital, Shinoda was there while the doctor gave the report. During Aoki's match against Snake Thomas, Kimura's match against Pone Morocotte and Ippo's match against Ponchai Chuwatana, he was there as one of their cornermen where they all won.
After the Naniwa gym approved of Ippo fighting their champion, Sendō, Kamogawa later decided to head to the Pension Yoshio as a training camp. When they arrive to the pension, they meet Nekota Ginpachi. Before Shinoda left for the woods to train with Ippo, Kimura, and Aoki, Nekota warned them of bears. Shinoda has the three boxers dash up and down hill until a bear came out and made them run away. That night, Nekota told Shinoda's group that he would prepare something to avoid bears the next day. The following day, Shinoda was shocked when Kimura and Aoki rushed back from roadwork and informed him that Ippo was attacked by a bear. However, Ippo came back with a dog, which Nekota confirmed to be his dog, Hachi. Kamogawa announced to everyone at the training camp that he would be splitting the group for individual training. Shinoda was grouped with Aoki and Kimura, with one training method being doing squats in a river. After Ippo finished his wood chop training, Shinoda participated in Kamogawa's teaching of "punching without punching, the Sakki.
On the final night of the training camp, Takamura returned wounded with a bear claw mark on his chest, claiming to have knocked out a bear. Shinoda then ate a bear nabe that Nekota made for the final night. The next day, Shinoda left with the rest of the group and returned to the Kamogawa gym. When Takamura, Aoki, and Kimura had a match against Itō Takaaki, Boy Allade, and Nefuma Ozca respectively, Shinoda was a cornerman for Takamura's match, and the main second for Aoki and Kimura's match where all three boxer's won. Shinoda was impressed with Aoki and Kimura's results of the mountain training.
On the day of Kimura's title match against the JBC junior lightweight champion, Mashiba, Shinoda was told by Kimura to not let anyone in his room for five minutes to be alone. After the five minutes and everyone entered the waiting room, Kimura told Shinoda and everyone in his waiting room that he would retire if he loses the match. Shinoda then encouraged Kimura to use his five years of experience to show the champion what for, wanting to let Kimura's decision on retirement be his alone. When Kimura's title maths began, Shinoda was one of his cornermen. After the eighth round, Kimura claimed to have seen the belt, which Shinoda remarked that hearing that could give someone goosebumps. In round nine when Kimura had a dangerous fall, Shinoda prepared to throw the towel into the ring to stop the match until Aoki stopped him. Despite Aoki's rebuttal, Shinoda decided to protect his boxer as a cornerman until Kimura got back up, with Shinoda deciding to not throw it. The match shortly stopped when the referee noticed Kimura was unconscious when Kimura slowly moved his hand to counter Mashiba, preventing Kimura from getting badly injured. With Kimura losing the match, Shinoda went into the ring to check on him. Shinoda then told a confused Kimura who still believed he was fighting, that it is over.
When Ippo's first JBC featherweight title defence match in the Champion Carnival against Sanada Kazuki began, Shinoda was one of Ippo's cornermen for the match which resulted in Ippo's victory.
Shinoda was one of Aoki's cornermen for his match against Paddy Magramo and one of Ippo's cornerman for his second JBC featherweight title defence match against Yamada Naomichi. The matches resulted in Aoki and Ippo's victory.
When the matches in October arrive, Shinoda was one of Itagaki Manabu, Kimura, and Takamura's cornermen for their matches where it resulted in a loss against Makino Fumito, winning decision against Arman Alegria, and winning ring out against Morris West respectively. When Ippo's third JBC featherweight title defence match against Yi Yon Su and Takamura's WBC junior middleweight title match against Bryan Hawk arrived in December, Shinoda was one of their cornermen for their matches of which they both won, resulting in Takamura becoming the WBC junior middleweight champion.
When Itagaki won for the first time in his second match against Baraki Haseo, Shinoda was a cornerman for the match. Later, when Kamogawa fell down during a mitt-training session with Ippo, Shinoda was handed the training mitts and continued the training session. On the day of Ippo's fourth JBC featherweight title defence match against Shimabukuro Iwao, Shinoda was one of the cornermen for Ippo. The match resulted in Ippo's victory.
When the weigh-in for Itagaki's first round of the East Japan Rookie King Tournament and Aoki's JBC lightweight title match against Katsutaka Imae arrived, Shinoda attended Aoki's weigh-in with Imae. When things got heated between the two, Shinoda held Aoki back. The next day, Shinoda arrived to the Kōrakuen Hall for Itagaki and Aoki's match. Shinoda and Itagaki had a mitt punching session before his match. Shinoda was a cornerman for Itagaki's match, which ended in a knockout win for Itagaki. Shinoda was then a cornerman for Aoki's title match against Imae. When the match was beginning, Shinoda instructed Aoki to break Imae's rhythm. While Aoki was tricking Imae with his Play Dead act, Shinoda and the other seconds were fooled as well, with Shinoda not wanting Yagi Haruhiko to throw the towel in as he wanted to see Aoki's six years worth of spirit. When Yagi frantically threw the towel, Shinoda caught it before it went into the ring, wanting Yagi to be patient as Shinoda believed Aoki has a strategy. The match ultimately ended after the ten rounds were over. A decision was made and the match ended in a draw, resulting in Imae keeping the belt and Aoki losing.
Shinoda arrived at the Ryōgoku Kokugikan and was one of Takamura's seconds in his first WBC junior middleweight title defence match against Larry Bernard, which ended in Takamura's victory. When Volg came to Japan and trained at the Kamogawa gym, Shinoda held mitts for him to punch. When Ippo's fifth JBC title defence match against Sawamura Ryūhei, arrived, Shinoda was one of Ippo's seconds for his match, which ended in Ippo's victory.
When Kamogawa used the prize money from the Sawamura match to take everyone fishing at the Makunouchi Fishing Boat, it turned into a fishing competition, with teams of two consisting of Takamura and Kamogawa, Aoki and Kimura, and Yagi and Shinoda. When it began, Shinoda and Yagi were beating everyone by a long shot. Takamura and Kamogawa were having trouble catching fish, leading an angry Takamura to stomp his feet as he tried to fish, shaking the boat and making Aoki go off board. When Takamura thought he got one, he reeled up an Aoki instead. When they ran out of fishing spots, they returned and gave the caught fish to Makunouchi Hiroko for her to cook. After everyone gathered, Kamogawa revealed that Takamura would challenge the WBC title for the middleweights, Aoki and Kimura have matches, Miyata has an OPBF title defence match before Takamura's title match, Itagaki continues his East Japan Rookie King Tournament, and Ippo is instructed to continue his recovery.
During Itagaki's quarter-final in the East Japan Rookie King tournament, Shinoda was one of Itagaki's seconds for the match, which ended in Itagaki's victory. Later, Shinoda and Kamogawa took Takamura, Aoki, and Kimura to a training camp. Shinoda praised their hard work to Kamogawa, watching them run without a fuss. Shinoda returned to the Kamogawa gym
When the Kamogawa gym members' matches arrived, Shinoda went to the Yokohama Arena. Shinoda was Kimura and Aoki's chief second for their match against Eleki Battery and Papaya Dachiu respectively. The matches ended in a draw. Shinoda was then one of Takamura's match against WBC middleweight champion David Eagle. After the match ended in Takamura's victory and he became the new WBC middleweight champion, Shinoda celebrated with Takamura and everyone celebrated in the ring. Afterwards, Shinoda believed Kamogawa was happy because of his relationship between trainer and student, however, Kamogawa thought it was more than that.
For Itagaki's East Japan Rookie King Tournament semi-finals, Shinoda trained Itagaki by doing mitt practise and finding sparring partners from other gyms. When Itagaki learned his opponent, Makino Fumito has Flicker Jabs, Itagaki and Shinoda went to the Tōhō gym so that he could learn how to take on the technique by sparring against Mashiba. Shinoda was his second during his spars three times a week with Mashiba. Later, Shinoda watched as Itagaki sparred with Kimura, where Itagaki surprised Kimura with his speed and barrage of punches. When Itagaki's East Japan Rookie King Tournament semi-finals match against Makino Fumito began, Shinoda was Itagaki's chief second for the match, which ended in Itagaki's victory.
Shinoda went to the Kōrakuen Hall for Ippo's seventh JBC featherweight title defence match against Karasawa Takuzō, where Shinoda was one of Ippo's seconds. The match ended in Ippo's victory in the second round by knockout.
At the Kamogawa gym, while Aoki was trying to split the gym in two factions and mentioned the popularity of his Broccoman persona, Shinoda and Yagi revealed that the children are tired of Broccoman and there was a rumour that Aoki was seen at the Kōrakuen Hall covered in faeces, further hurting his image. Shinoda had Itagaki spar with Ippo as his last spar until his match against Imai for the East Japan Rookie King Tournament finals. After the spar, Shinoda remembered how Itagaki has had bitter experiences since being a professional boxer, but it has helped him grow mentally and he was positive that Itagaki will get his revenge on Imai. When Itagaki's weigh-in for his match against Imai arrived, Shinoda went with him to the Kōrakuen Hall for the weigh-in.
The next day, Shinoda went to the Kōrakuen Hall to to be Itagaki's chief second in his match against Imai in the East Japan Rookie King Tournament finals. Shinoda watched and was frightened when Itagaki got into an in-fight with Imai, telling Itagaki after the first round that fighting Imai at close range is risky. Shinoda instructed Itagaki as he left for the second round, to avoid swaying back if he fights in close range so that he doesn't get knocked off balance. After the second round, Shinoda and his team fixed up a cut on Itagaki's forehead before he headed out for round three. Shinoda was unable to give Itagaki advice, as he thought it would like calming a racing horse that is ready to go. He noticed Itagaki is excited in his first venture of close range fighting, making Shinoda believe that there is something changing inside of Itagaki. After the third round, Shinoda stopped Itagaki's bleeding on Itagaki's forehead and informed him that they have the score advantage and to not let his guard down. After the fourth round, Shinoda brought Itagaki's spirits up with the ultimate words of "Gattsu de Gattsun Gattsun da!!" ("ガッツでガッツンガッツンだ!!"). After the fifth round Yagi's pun of "Ima no isu, Naisu" ("今のイス、ナ～イス") was met with a glare by Shinoda. As the referee noticed that Itagaki was unconscious, he planned to end the match. Shinoda called for Itagaki to wake up to prevent the match from ending, but only Ippo's voice was able to wake him up. With both boxers standing at the end of the sixth and final round, the match went into a decision, which resulted in Itagaki's victory. Shinoda went with Itagaki as he was taken to the hospital.
When Itagaki came to the gym after staying in the hospital, Shinoda revealed to him that it was decided that he would be resigning from the All Japan Rookie King Tournament due to his left hand and Achilles tendon being damaged. Shinoda went to the Kōrakuen Hall to be one of Ippo's seconds in his seventh JBC title defence match against Take Keīchi. During the fourth round, Shinoda told Kamogawa how Take reminds him of Aoki, which Kamogawa agreed. The match ended in Ippo's victory by knockout in the sixth round.
Shinoda arrived to the Ryōgoku Kokugikan for Kimura, Aoki, and Takamura's matches. Before going into the ring with Kimura, Shinoda advised for Kimura to not drop any lower in the rankings if he wants to succeed his divide and conquer plan where Kimura becomes champion if Mashiba and Sawamura takes each other out in their next match. Shinoda was Kimura and Aoki's chief second in their rematches against Eleki and Papaya respectively, which both matches ended in a draw. Shinoda was then once of Takamura's seconds in his first WBC middleweight title defence match against Richard Fox, which ended in Takamura's victory.
When Mashiba called for Itagaki to spar with him, Shinoda took Itagaki to the Tōhō gym to be his second.
Shinoda brought Itagaki to Kamogawa's office, where the two learned that Hoshi Hiroyuki sent a challenge to Itagaki to fight in Osaka and if Hoshi wins, he gets to fight Ippo for the JBC title. Itagaki accepted the challenge, but has to win one more six round match before moving up to become an eight rounder and be allowed to fight in a JBC rank match. Shinoda reassured Kamogawa that Itagaki's injuries from his match against Imai were healed. Shinoda was Itagaki's chief second for the six round match, which ended in Itagaki's victory by a decision. Outside the Kōrakuen Hall Shinoda overheard Aoki and Kimura deem Shinoda a "Trainer from Hell" and the "Master of the Sludge Match Shinoda" due to Itagaki's poor performance, making them run off. Later, Shinoda had Aoki spar with Itagaki in preparations for Itagaki to go against Hoshi.
Shinoda gave Kamogawa resignation paperword, and explained that he is afraid that it might be exactly like Aoki and Kimura said, that he is a trainer from hell who only teaches how to fight in sludge matches. Shinoda believed he wasn't able to tap into enough of their potential and failed at both Kimura and Aoki's title matches. He explained that if Itagaki were to lose on top of that, then it would be his fault for not helping him utilise his talent as well. Shinoda informed Kamogawa that if Itagaki loses his next match, then he will take responsibility for it. While Itagaki is preparing for his upcoming match against Hoshi, Shinoda ask how Itagaki is doing, and comments about both of them working hard and leaving behind no regrets.
Shinoda went to the Osaka Prefectural Gymnasium to be Itagaki's chief second in his match against Hoshi. Shinoda advised Itagaki to focus and watch all of Hoshi's moves. During the match, Shinoda witnessed Itagaki's Bullet Time and declared to Kamogawa that the genie is out of the bottle. The match ended in Itagaki's victory by knockout in the first round.
During Ippo's absence from the gym due to Miyata calling off the match with him, the gym's atmosphere became tense as Shinoda stopped Aoki and Kimura's argument. Shinoda took Takamura, Aoki, Kimura, and Itagaki to a training camp. When Ippo's match against Thai featherweight champion Jimmy Sisphar arrived, Shinoda went to the Kōrakuen Hall to be one of Ippo's seconds. During the first round, Shinoda planned to get the blood stoppage gear ready due to a great chance of Ippo and Sisphar's heads colliding. After Ippo won against Sisphar by knockout in the fourth round, Shinoda tried to stop Kamogawa's scolding to Ippo by pointing out that Ippo performed the uppercut like Kamogawa told him without any training.
Shinoda had Aoki, Kimura, and Itagaki spar with each other as their matches were coming up. After Takamura came back from a trip, Shinoda watched as he showed everyone at the gym his new Beetle's Uppercut that he planned to use in his upcoming match. When the Kamogawa gym's matches arrived, Shinoda was the main second for Itagaki's match against Alex Harker, Kimura's match against Michael Gehon, and Aoki's match against Padawan Yoda, which all three matches ended in the trio's victory by knockout. Shinoda was one of Takamura's seconds in his second WBC middleweight title defence match against Rickey Mouse, where Takamura won by knockout.
Later, as Aoki, Kimura, and Itagaki discover that they haven't moved up in the monthly JBC rankings, Shinoda explained how they did not fight Japanese rankers in their latest match and suggested for them to fight a high ranking opponent to rise in the rankings.
When Yagi got off the phone with the police to pick up Kamogawa at the police station, Shinoda yelled for the worried gym mates to come back to the gym and train. When Kamogawa returned, Shinoda informed Ippo that he has a visitor. On the day of Ippo's match against the Philippines featherweight champion Malcolm Gedo, Shinoda arrived to the Kōrakuen Hall to be one of Ippo's seconds for the match. The match ended in Ippo's victory by knockout in the eighth round.
Overhearing Aoki, Kimura, and Itagaki talk about how they want to raise their rankings, Shinoda announced that they would be entering the Class A Tournament. When Fujii Minoru entered the gym and drew graphs for Aoki, Kimura and Itagaki, and explained how in a square filter, Takamura would be a big circular rock that stays in the pro circuit, Aoki and Kimura would be smaller rock and Itagaki would be a pointed rock, with all three possibly falling through the filter, Shinoda advised the three to train in order to be a bigger rock that won't fall through.
When the Kamogawa gym was requested to send Itagaki to the Otowa gym to spar against Randy Boy Junior, Shinoda took Itagaki and Ippo to the Otowa gym and was Itagaki's second during his spar against Randy, which ended in Itagaki's defeat in the second round. However, Ippo wanted to spar against Randy for the last remaining round, much to Shinoda's dismay. When Ippo got in the ring, Mr. Sakaguchi stopped the spar since Ippo refused to fight Randy the last time they met, and that Randy will only face him after his fight with Miyata and when Ippo's world ranking is on the line. With Itagaki's spar over, Shinoda, Ippo, and Itagaki left the gym.
With Aoki and Kimura having matches coming up, Shinoda had Aoki and Itagaki, and Kimura and Ippo spar each other. On the day of the gym's weigh-ins, Shinoda went to the Kōrakuen Hall for Aoki and Kimura's weigh-in. He went along with the gym to the De La Hoya to eat. The next day, Shinoda went to the Yokohama Arena, where he was Kimura's chief second in his match against Sim Rex, which was stopped by a doctor in the fifth round and Kimura lost the decision, and Aoki's match against Ponsa Kureck, where he lost by decision after ten rounds. Shinoda scolded Aoki and Kimura for losing winnable fights. After Miyata won against Randy, Shinoda went to the ring with Takamura as one of his seconds in his third WBC middleweight title defence match against Ronald Duck, which ended in Takamura's victory by knockout in the tenth round.
After Takamura sang a song to Aoki and Kimura about them losing and they got annoyed by it, Shinoda agreed with Takamura that they need to realise how bad they did in their match as they could mess up their Class A Tournament. In preparation of Itagaki's next match, Shinoda had him spar against someone from another gym, along with Ippo. When the day of Itagaki's match against Kaonar Pachiyoso arrived, Shinoda went to the Kōrakuen Hall to be his chief second. Worried at first that Itagaki may lose due to not concentrating, Itagaki won by knockout in the second round.
As Aoki and Kimura's first opponent in the Class A Tournament were the ones that made them lose the first time in the tournament, they became pessimistic. Shinoda got them fired up after he mentioned that this is their chance to get revenge and show that they have changed. Shinoda helped Aoki, Kimura, and Itagaki in their training for the Class A Tournament.
On the day of Ippo's match against the Indonesian featherweight champion Wally, Shinoda went to the Kōrakuen Hall to be one of his seconds. After Ippo won against Wally by knockout in the eighth round, Shinoda ordered Aoki, Kimura, and Itagaki to follow Ippo's lead by aiming to win.
Overlooking Itagaki's spar against Kimura for the Class A Tournament, Yagi wondered why Itagaki was doing poorly. Shinoda explained that Itagaki can't bring out his full potential unless in a match and fully focused, not knowing his condition until he fights. On the day of the first round of Aoki, Kimura, and Itagaki's Class A Tournament, Shinoda arrived to the Kōrakuen Hall to be their chief second. When itagaki's match against Karasawa began, Itagaki looked down when he came to the corner after the first round. While Shinoda lamented on how wasted the first round was, he pointed out that Itagaki gained a perspective of what it is like to be a class-a boxer. He advised Itagaki to simply pay attention as he went out to the second round. As Itagaki began to take the lead in the second round, Shinoda noted that he did not know it would happen, but hoped his advice would, as his full potential is unleashed when he is relaxed and stays focused. After Itagaki defeated Karasawa in the second round by knockout, Shinoda's Aoki and Kimura fought their matches against Jackal and Ryūzaki respectively, where Aoki and Kimura win by decision.
As Kamogawa reviewed to everyone about the upcoming matches, Shinoda revealed that the Class A Tournament finals were coming in November. Shinoda helped Ippo in his training against his eighth JBC featherweight title defence opponent Kojima Hisato by holding a sandbag to make it hard for Ippo to push it.
When Ippo's eighth JBC featherweight title defence match against Kojima and Takamura's fourth WBC middleweight title defence match against Peter Rabbitson arrived, Shinoda went to the Ryōgoku Kokugikan to be one of their seconds where both Ippo and Takamura win their matches by knockout.
Overlooking Aoki and Kimura's spar, Shinoda informed Kamogawa and Yagi that he is confident that Aoki, Kimura, and Itagaki will win the Class A Tournament finals, with Aoki and Kimura's experience and Itagaki's great potential. On the day of the Class A Tournament finals, Shinoda went to the Kōrakuen Hall. Shinoda was Itagaki's chief second in his match against Saeki. After the first round, Shinoda advised Itagaki to not overthink things and to keep going after him. After the second round, Shinoda played an animal-themed game of Shiritori with Itagaki to get him to relax. Shinoda received praise from Kamogawa after the match ended in Itagaki's victory by knockout in the fourth round.
Shinoda was Kimura's chief second for his match that ended in a decision loss and Aoki's match against Iga Shinobu that ended in a loss by knockout in the seventh round as Shinoda threw the towel in the ring due to Iga toying with Aoki, not letting him go down even though he could have knocked him out at any time. Due to the injuries, Shinoda went with Aoki has he was taken to the Kawai Hospital. Shinoda was relieved to hear from Mashiba Kumi that Aoki is in stable condition.
While Kamogawa was doing mitt practise with Ippo and Takamura, Shinoda deemed Kamogawa a master trainer as he taught Ippo and Takamura the positioning, step-in, and angle of their punches despite his age and body size difference. On the day of the weigh-in for Itagaki's JBC featherweight title match against Imai and Ippo's weigh-in for his match against Alfredo Gonzales, Shinoda went to the Kōrakuen Hall to be with Itagaki for his weight check. The next day, Shinoda returned to the Kōrakuen Hall for Ippo and Itagaki's match. Shinoda mitt practised with Itagaki before going with him to the ring to be his chief second in his JBC featherweight title match against Imai. The match ended in Itagaki's defeat in the first round by knockout. As Ippo's match against Alfredo began, Shinoda was one of Ippo's seconds for the match which ended in Ippo's defeat in the seventh round by knockout. Shinoda ran into the ring with Yagi and Kamogawa to check on Ippo before walking away from the ring.
When Takamura's unification match against the WBA middleweight champion Richard Bison arrived, Shinoda went to the Yokohama Arena to be one of his seconds. The match ended in Takamura's victory, making him both the WBC and WBA middleweight champion.
When Shinoda entered the Kamogawa gym, he noticed Fujii's also there. After Fujii explained their story to everyone at the gym, Shinoda informed them that he lost his pro debut match, and only fought in six matches, ending with an average record. Shinoda apologised to Fujii about not being able to fulfil their promise, but Fujii reassured him that it is okay, since he wasn't suited to be a pro boxer. When Aoki asked to see Shinoda's fist, Shinoda wondered why Aoki was disappointed when he sees it. Later, Shinoda with Kamogawa and Yagi informed Aoki and Kimura about their upcoming ranked matches that take place as an opener before the main event of Iga challenging the JBC lightweight champion. When Ippo wanted to see the new upgrade that Aoki mentioned, Shinoda hosted a one round spar between the two, where Ippo gets knocked out by Aoki's new Bell Horn. Afterwards, Shinoda discussed with Kamogawa and Yagi how he is glad that Aoki is motivated for his match, but is worried about Kimura since he has no motivation at all.
When Aoki and Kimura's come-back matches arrived, Shinoda went to the Kōrakuen Hall to be their chief second for their matches. Kimura's match ended in a draw after eight rounds and Aoki wins his match by knockout in the eighth round. Shinoda watched Iga's JBC lightweight title match against the champion Ōshima Sōshi in the venue's waiting room. The match ended with Iga's victory by knockout in the sixth round, making Iga the new JBC lightweight champion. Observing how Iga's plan that had him win ust have required a lot of planning and practise, Shinoda was warned by Kamogawa that he will have to fight Iga and Baron just as much as Aoki.
When three potential new members came to the Kamogawa gym, Shinoda hoped that they would stay for a while, however, after they saw how Ippo trained and Kamogawa's attitude, they left. Later, Shinoda went to the Kōrakuen Hall to be Aoki, Kimura, and Itagaki's chief second in their matches. Itagaki's match ended in a decision win, Kimura's ended in a draw, and Aoki ended his match with a knockout.
While Shinoda did mitt training with Ippo, he had to stop after being unable to catch a body blow from Ippo's Dempsey Roll even with it hitting Shinoda's padding on his body. Shinoda explained to Ippo how someone who catches punches have anxiety while doing so, being impressed that Kamogawa has always held mitts for Ippo and to not take Kamogawa seriously when he makes light of his punches. Shinoda suggest for Ippo to think about how much determination it takes for Kamogawa to catch his punches and how hard it is for Kamogawa to lecture him, advising for Ippo to show him gratitude if he is grateful of his lectures. Later, Shinoda went to the Roigal Hotel for Takamura's press conference for his WBC and WBA middleweight title defence match against Keith Lycaon and Ippo's come-back match against Antonio Guevara. The next day, Shinoda went to the Ryōgoku Kokugikan for Ippo and Takamura's match to be one of their seconds. After being one of Ippo's seconds for his match against Antonio, and Ippo lost to him, Shinoda reassured Yagi that it wasn't his fault for picking a southpaw opponent for his return matching, believing that it was a combination of Ippo's pressure of his return match and his fixation on showing the Dempsey Roll. Shinoda was one of Takamura's seconds for his match against Lycaon, where Takamura won by knockout in the first round. Later, when Ippo returned to the gym, he announced his retirement.
Two months after Ippo retired, due to the Kamogawa gym being short staffed, Kamogawa being in the hospital, and Shinoda wanted to give Aoki, Kimura, and Itagaki a much needed boost, Shinoda went to the Makunouchi Fishing Boat to ask Ippo to come back to the ring as a second. When Shinoda got there and asked Ippo to be a second, he got scared of Mashiba Kumi and Itagaki Nanako after Kumi yelled at him for trying to get Ippo back into boxing and Nanako questioning her trust in him with her brother. Shinoda was asked what happened to him to be anxious when getting yelled at by women. Shinoda revealed how he once he once paid a visit to a free information office, and when he picked his destination, he was caught by his wife, getting in trouble since it wasn't the first time. As he began to get nervous when Ippo, Kumi, and Nanako asked what a free information office is, leading to his hair falling out from stress. Before leaving, Shinoda informed Ippo that Kamogawa is in the hospital and that it was decided he can only work with Takamura for now, and the gym needs someone that can be trusted to help in the meantime. As Ippo mentioned that he needs time to think about it, Shinoda requests for an answer before Kimura's match in a week.
A week later, Shinoda went to the Kōrakuen Hall for Kimura's match to be his second. After the first and second round of Ippo making comedic mistakes and Shinoda's hat falling off revealing a bald spot, Kimura got angry at the two, thinking that they think his match is a joke. Shinoda scolded Kimura, and, when Ippo mentioned that Shinoda might be stressed due to problems with the free information office, Kimura called Shinoda an old pervert. Shinoda was insulted by Kimura since he has treated him like a son, and decided to not help him out in the match anymore. The match ended in Kimura's victory by knockout in the seventh round. Later, Shinoda went to the Kōrakuen Hall and was one of Aoki and Itagaki's seconds for their match that ended in Aoki's victory by knockout and Itagaki's victory by decision. After Itagaki ran off after Ippo was criticising him throughout his match, Shinoda and Yagi realise that Ippo was only hard on Itagaki, knowing that Itagaki will know why Ippo has high expectations for him.
Shinoda went to the Roigal Hotel for Takamura's press conference for his WBA and WBC middleweight title defence match against Michael Goat, where he revealed that he would move on to the super middleweight class after the match. The next day, Shinoda went to the Ryōgoku Kokugikan to be one of Takamura's seconds in his match against Goat, which ended in Takamura's victory by knockout in the second round.
At the Kamogawa gym, Shinoda looked at Ippo's notepad with numbers that he uses to call out numbers to his students that are assigned to basic techniques and revealed that it is a Numbering System which requires an unshakeable teacher-student bond for a quicker reaction time and faster combinations. As the new gym members Aoki Taihei and Kintarō Kaneda want to go to Takamura's victory party, Shinoda informed them that Takamura is away on a trip.
When the weigh-in for Kimura, Itagaki, and Aoki's match arrived, Shinoda went to the Kōrakuen Hall to attend their weigh-ins and was shocked to see Ippo, who was in charge of helping Kimura with his weight control, carrying Kimura while both are bald. After Kimura barely made weight in the reweigh-in, Shinoda went with the gym members to the Donaire to eat as Ippo explained Kimura's Dragonfish Blow strategy for his match. The next day, Shinoda arrived to the Kōrakuen Hall for Kimura, Itagaki, and Aoki's match. Shinoda was one of Kimura's seconds for his match against Yoshimoto Junpei. During the first round, when the chief second, Ippo, was being too loud and giving signals to Kimura and got warned by the referee, Shinoda explained that it was a general rule to not give instructions or signals to fighters during a match, as he may get dismissed or Kimura might get a point deduction. After the first round, in order to revive Kimura, Shinoda, Yagi, and Ippo used the "Kamogawa Revival Technique." Noticing that a body blow is needed to win, Shinoda mistakenly shouted to use the "Fish Dragon" instead of the "Dragonfish" The match ended in Kimura's win by knockout in the second round. Shinoda was one of Itagaki and Aoki's seconds, where Itagaki won by decision and Aoki won by a seven round knockout.
At the Kamogawa gym, while Ippo was doing mitt practise with Taihei while using his numbering system, Ippo mistakenly blocked a six (right hook) like a three (left hook), causing the mitt to hit his face and his nose to bleed. As Taihei apologised, Shinoda mentioned that he has no need to apologise as it was Ippo's fault for catching it wrong. Shinoda wished for Ippo to watch him mitt practise with Kimura, however, when Kimura's wig fell off and revealed his Kappa hairstyle, Shinoda was accidentally hit in the face due to being unable to block as he laughed. Shinoda and Kimura were told to get out of the ring by Takamura if they are trying to be comedians as he is mitt practising with Kamogawa. While Aoki and Kimura were impressed with Takamura's mitt hitting, Shinoda believed Kamogawa, who is catching his punches is the impressive one due to his old age, but figures that that is why he is divinely skilled. That night, when Ippo entered Kamogawa's office, Shinoda asked him how Kintarō and Taihei's training has been going, as Yagi informed Ippo that they have been talking about letting them do their pro test and debut, requesting to know their weight classes. Ippo replied that they are not old enough to debut yet, but will be soon, and that he will think of what weight class to put them in. Switching the discussion to Takamura, Yagi expressed how he wishes he could have Takamura fight around the world, however, Shinoda explained that Takamura stubbornly chooses to fight only in Japan. Yagi pointed out that he wants the gym to have a match at the Tokyo Dome, suggesting to book Takamura and Dragon's match with Sendō and Ricardo's match to possibly make the Tokyo Dome sell out. Shinoda noted that Sendō's rehabilitation for his fist will take a while, making the plan impossible. Ippo asked them how long Ricardo will stay as a featherweight and why he chooses to stay, since he has defended it many times and it has been said that Ricardo has no competition left at featherweight. Shinoda commented how Ricardo has no interest in dominating another weight class nor a unification match, and Ricardo staying as the WBA champion makes it troublesome for WBA rankers.
Later, Shinoda went to the Ryōgoku Kokugikan to be one of Takamura's seconds for his WBC super middleweight title match against Dragon. During the second round, as Shinoda and Yagi saw that Ippo and Kamogawa had an uncomfortable feeling about Takamura, they tried to find the source of their discomfort. However, Kamogawa revealed the source as Takamura being stronger than usual since he has been freed from the shackles of weight control. After Takamura won in the fourth round, becoming the WBC super middleweight champion, Shinoda went into the ring with Takamura's champion belts and wrapped a towel around Takamura's forehead where skin tore during the fourth round. Shinoda celebrated with Takamura and the other seconds for Takamura's victory.
On the day of Mashiba's world title preliminary match, which Itagaki's match against a Filipino ranker is the semi-final of, Shinoda went to the Kōrakuen Hall. Shinoda was the second of Itagaki during his match, where he kept giving Itagaki advice that contradicted Ippo's, making Itagaki confused. The match ended in Itagaki's victory by decision.
When he entered the Kamogawa gym, Shinoda heard sounds of punches hitting the mitts, and learned from Aoki, Kimura, and Itagaki that due to unfinished business in the morning, that they are doing mitt hitting practise until one of them quits. Watching Ippo hit Takamura's mitts, Shinoda noticed how they are in sync with Kamogawa's rhythm, and that their punches seemingly reject anyone else holding for them. After Ippo landed a body blow punch on the mitt, Takamura rushed to the bathroom to defecate, ending the practise session. Later, since Ippo went to Mexico, Shinoda held the mitts for Taihei and Kintarō. Shinoda frantically told Taihei to stop because his wrists began hurting and noted how their combinations flowed smoothly, making it difficult to grasp their rhythm. After hearing how Ippo has been knocking down Taihei and Kintarō's punches during mitt practise, Shinoda was surprised, as it is like doing a counter, something Ippo was the worst with as an active boxer, wondering just how many weapons are at his disposal as he changes in the environment that he is in.
- VS. Fujii Minoru All WIN (Many Times)
Shinoda is a man with a tanned, average body structure. He has short dark brown hair and long eyebrows and one forehead wrinkle. His black coloured eyes are squinted. He has also grown a short moustache. At some point, his hair began to fall out, starting from the top of his head, wearing a hat to cover the bald spot until it grew back.
When Shinoda was a boxer, during his amateur days, with his boxing skills, he was able to make it to a city tournament finals and win. While pro, his boxing skills were shown to be average, losing most of his six matches before retiring.