Weak hero

Shi Ying: cold, calm, witty, seemingly quiet but actually a cold strategist. Ahn Soo Ho: a former MMA fighter, honest, does not tolerate bullies, becomes Shi In's friend and mentor. Oh Beom Seok: the adopted son of a deputy, his character is a complex mixture: resentment, envy lead to aggression, but later he can side with the heroes. Baku: fair, stylish, becomes a mentor in the fight against school bullies. Cho Yeon Bin: a school bully, belongs to a gang, until he encountered Suho, he believed in an invincible victory. Na Baek Jin: the leader of the interschool criminal group Alliance, smart, tough and without brakes. Seo Joon Tae: sweet, kind, shy, bullied victim Kang Woo Young: A young MMA fighter who lost to Su Ho and harbored a grudge. Go Tak: a former taekwondo athlete who left the sport after an injury, becomes a shield for Baku, holds his own. Geum Sung Jae: Baek Jin's right-hand man, ruthless, he carries out the Alliance's dirtiest work.