Luca

Luca (ルカ, Ruka) is a human and the main protagonist of Shuumatsu no Laughter. He calls himself the Demon Eater (悪魔喰い, Akuma Kui). He wears a tattoo in the shape of a Demon's Mouth to trick people into thinking he's a Demon.

Appearance
Luca is tall and lean, appearing to be around the age of 19. He wears a tattered black cloak over his clothes. His eyes are often cold and calculating but become very warm and gentle when his sister Haru is involved.

His most striking appearance is the "Mouth of the Akuma" tattoo on his right cheek to imitate his younger sister's.

Haru
Luca is Haru's brother.