So many triggered giving 1/10 without even reading! I mean this story is far from being a masterpiece or even good! But slamming a manga because it contains something you don't like make you ignorant!
Beside, who said we need to cheer for the MC? He's just a representation of a broken person inflicting revenge on other broken people and keeping the circle alive!
I feel sorry for those who can't distance themselves from a fiction character!