Try looking through this list maybe you'll recognize it by art
https://www.mangago.zone/home/mangalist/557041/?filter=&page=2
Also some of my personal faves
https://www.mangago.zone/read-manga/juujika_no_rokunin/ https://www.mangago.zone/read-manga/dear_boy/ https://www.mangago.zone/read-manga/dokgo/ https://www.mangago.zone/read-manga/the_devil_s_boy/ https://www.mangago.zone/read-manga/super_outcast/ https://www.mangago.zone/read-manga/weak_hero/ https://www.mangago.zone/read-manga/the_boxer/ https://www.mangago.zone/read-manga/save_me/ https://www.mangago.zone/read-manga/rebirth_of_the_butterfly_girl/
Hey, thankyou sm for the recommendations!
Anyway, I find the manhwa, it's called "A Sense of Amusement", it's also pretty good
Glad you found it !
So the story started with a bullied girl, the bully was so bad she end her life by jumping from a building (Idk the detail). The father of the girl adopted other girl her age, but she's not just an ordinary girl, the adopted girl is actually an assassin and the father hire her to revenge on people who bullied his real daughter
Or anyone have recommendation manhwa about revenge on bullies?