He’s a villain in a comprehensive comic

Traveling through the comic book world and becoming a villain, Cheng Gao discovered that he could become stronger by attacking decent people.

After getting rid of all the decent ones, you can even turn the whole world into your own back garden.

then–

Demon Slayer World, Yoshiya Yashiki: “What?! How come my Demon Slayers became ghost swordsmen?”

One Punch World, Hero Association: “Why did my hero switch to Dongfeng to become an A-level hero, regardless of his S-level status?”

Weird Association: “Ah!? Why are we being targeted for creating weirdos, while they are creating weirdos and people are rushing to get rid of them?”

…

(Naruto, Fate, Zan Crimson Eyes, Seeking Encounter in the Dungeon, Sword Art Online, Black Bullets…)