The Liver Blow (レバーブロー, Rebā Burō) is a left body blow to the liver.
The user directs a hit underneath the target's right pectoral behind the rib cage. To add power, the user twists his waist while keeping his free hand tucked in, placing his weight on his forward leg; this allows his back and leg muscles to add momentum to the punch. A well-executed liver blow should have a slight delay between the twisting of the waist and the launching of the punch. Boxers who are experts at the liver blow can perform the punch so swiftly and compactly, that the delay is not noticeable at all.
If enough strength is put behind the attack, it ruptures the liver, causing internal bleeding which leads the affected individual to experience nausea and disorientation. For hard punchers like Makunouchi Ippo, it can also crack the rib cage of his opponents. It is an especially effective attack in stopping a fast-moving opponent, typically out-boxers.
The major flaw of the liver blow is twofold; it is an extremely close-range attack, requiring the boxer to stand toe-to-toe with the opponent in order to target the desired body part, and at the same time the boxer needs enough space to rotate their hips and arm, otherwise the punch will have much less power. The liver blow can therefore be avoided by either staying at medium range and beyond, or via clinching.