Aku

Aku is the female protagonist of the series Maou-sama, Retry!. Her appearance has been described as androgynous, Aku has long bangs, with a portion of it covering left side of her face. She was born with heterochromia in her eyes, one red and one green. Aku can be described as pure and fragile, due to her horrible life before meeting Kunai. Also somewhat stupid, as she constantly calls Kunai "demon lord" in public despite the fact it draws attention; she knows his full name.