Tooth for tooth (Manga)
Other Name: 以牙还牙

Genres: manga, Adventure
Authors: Ecomix
Chapter: 40+
Year: 2020
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Description:
This is the ending, boy. Yongjin heard news about his younger brother Yongjoo trying to commit suicide at school. Yongjin did not expect this to happen, so he went directly to the school to talk to the teacher. However, with his arrival, fighting broke out among the students. Covering up the facts, the student involved decided to use Yongjoo as the attacker.