Reading Murder Lock: School of the Killing Raw, English etc on manhwaz.com
Kotaro Kudo was known as the Streets Strongest. Once, 13 thugs, thirsty for revenge, kidnapped his younger sister. Kotaro beat everyone, and on the same night, he was arrested on suspicion of murder, as each of them was later found dead. He is then forcefully enrolled to a certain school, in which all students must meet a special criteria to enter..
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