Anime: Tokyo Ghoul
Touka is a ghoul, a vampire-like demon reliant on humans for sustenance.
Referred to often as ‘Rabbit’ for her stylized mask and tendency to bounce around hunting at night, she spends her days at school or as a waitress. Not too demonic but eh, she’s got a life.
Touka is the one to help our protagonist, Kaneki, with adjusting to his new life as a ghoul. Even if that job comes with some reluctance.
She doesn’t like getting close to people, with very few exceptions. But opens up throughout the series to become one of the best female Tokyo Ghoul characters.