Sweet Revenge

The manga centers on homicide detective Hiroki Dan, the son of a former police superintendent general, and who seems to be on the fast track to career success. He maintains a hidden identity as a serial killer responsible for more than a hundred murders of people he deems beyond the reach of the law.

*ON WEBTOON*
Once the bullies target you, it’s game over. The school is run by tyrants whose favorite hobby is tormenting the weakest kids in class. But then Gray arrived. This mysterious new student threatens to dismantle the established order. He may be small in stature, but his calculative and brutal fighting leaves unsuspecting opponents lying on the floor begging for mercy. Now the school's toughest bullies have to scramble to take down this new and unusual hero.

Hyeongoh, the first place student at school, is disabled and has a knack for getting ridiculed by the school's bullies. With no help and no way out, he finds himself in a despairing situation...until someone appears to stand by his side!

*ON WEBTOON*
There is a serial killer in my house!

Yoseob, normally very quiet and composed, is in the police station convicted of stabbing 8 civilians with a knife. Everyone's wondering whether he actually committed the crime. Does he, a mere high-schooler, really have any reason to have done such a horrifying act?Does his obsessive love for his older brother, Jaeha, have something to do with it?

After Kang hu’s death from bullying, the family was torn into pieces. His younger brother, suppresses his resentment, and heads back to school. The story begins exactly one year after kang hu’s death where the his brother seeks to destroy the delinquent circle…

A boy who is bullied, and forsaken, is chosen by a sword that falls from the sky.

“Is it okay to kill people?”
Shin Uruma, a sixth-grade student, was named "Experimental body: A" by five of his classmates and was severely bullied and lived in hell. His only peace was with his brother, who loved him, and his parents, who protected him.... . until the five monsters killed his family.
When he finally loses everything and faces true hell, a dark "wish" is born.

Jungho is bullied to the point of self-harm, until one day, his prayers are answered by Mephistopheles, the archdevil. Mephisto offers Jungho magical powers that would allow him to take revenge on his bullies, and in return, asks for his soul. It’s an easy choice for Jungho, who thinks nothing can be worse than the living hell that is his life. But what he doesn’t know is that there are greater forces at work, and that he is but a pawn in a much larger game played by demons and exorcists