Crossplay to Save the World: I Slay Demons and Become a God

Hanyu Shun discovers that he can gain a character's abilities simply by cross-dressing and cosplaying as that character from an anime or game.

[I've bound myself to a System that makes me stronger through embarrassing roleplay!] [My little sister definitely isn't a demon princess!]

Other demon hunters rely on talent. He only needs to cross-dress and cosplay as an anime character to play the role perfectly.

Bro, your bra padding is crooked.