any good revenge stories? I need really satisfying revenge of a sad backstory

Deliverance of the counter attack is pretty nice. Not completed yet but the revenge is pretty sweet. The story is just also cute :-)

http://www.mangago.zone/read-manga/the_hero_who_seeks_revenge_shall_exterminate_with_darkness/
Definitely not ur average hero turns to villain (๑•ㅂ•)و✧

http://www.mangago.zone/read-manga/shadow_queen/