From Tappytoon:
"This is the end, boy.".
Yongjin hears the news that his younger brother, Yongjoo, tried to commit suicide at school. Yongjin, who never thought this would happen, heads directly to the school to talk with the teachers. But, as he arrives, a fight breaks out among the students. In an attempt to cover it up, the students involved decide to frame Yongjoo as the assailant.
…Proper education on how to protect the students from violence…A just society where perpetrators receive proper punishment for their crimes…Yongjin, who doesn't believe that such things exist in real life, decides to take matters into his own hands!
Satisfying action with an exciting plot twist. A story that will send shivers down your spine. Can you say…Catharsis?

Original Webtoon:
Lezhin, Ridibooks, Toomics, Anytoon, Comico, MrBlue

Official Translations:
Thai

All English platforms have since removed the series off their platforms as of April 2023. Tappytoon was the last to remove it.