He can be anything but a human. I want a manga where the MC goes like, "...if I do this, kill me" thing.
Like in,
Ao no exorcist
D Gray man
Owari no seraph
Bingo stray dogs,maybe
Shinigami to gin no kishi
Ake no tobari
Crepescule

Etc.
Basically mangas where the mc is cool n all but thinks/people think of himself/of him as 'evil'.
Thanks 😛