Bastard (Webtoon) vol 4 back

THE KILLER WAITING AT HOMEJin Seon is a sickly high school boy living in the shadow of a dark secret: His father is a serial killer. To make matters worse, Jin's father forced him to serve as an accomplice to his crimes for years. Now that Jin's trying to break free, his father's malevolence is bearing down on him. His girlfriend Kyun is a target for murder, his friend Manny has been crippled, and his finances have been completely cut off. With no one left to turn to and nowhere left to go, does Jin have no choice but to return home and face whatever evil game his father has planned? And there's a darker question beneath it all--deep down, is he a killer, himself?