%e8%bb%8d%e9%b6%8f%2c%e2%80%93%2craw%2c%e3%80%90%e7%ac%ac30%e8%a9%b1%e3%80%91%2c%e8%bb%8d%e9%b6%8f%2c%e2%80%93%2craw%2c%e3%80%90%e7%ac%ac30%e8%a9%b1%e3%80%91%2craw%2cfree%2conline%20 [INSTANT ✦]

Ryo Narushima was a genius destined for Tokyo University until he snapped and killed his parents with a switchblade. Sentenced to a juvenile reformatory, he becomes a target for horrific abuse. His only salvation comes from , a failed assassin who teaches Ryo the "true" karate—not the kind for sport, but the kind for killing. The Tragedy of Escapism | Shamo Discussion

Here is a blog post covering the series and the context around Chapter 30. Survival of the Vicious: A Deep Dive into Shamo (軍鶏) Ryo Narushima was a genius destined for Tokyo

The series (軍鶏) is a dark, psychological seinen manga written by Izo Hashimoto and illustrated by Akio Tanaka. It tells the brutal story of Ryo Narushima, a former elite student who murders his parents and survives a harrowing juvenile reformatory by learning lethal karate. The Tragedy of Escapism | Shamo Discussion Here