Fuku

Fuku is a relatively polite girl, albeit one who is often stressed about work and finances. She believes she needs to work hard to support her parents as their business isn't doing very well, something her grandmother tells her is an issue only adults should be worrying about. Fuki is adamant about her belief that demons don't exist, refusing to turn in for the night just because her grandmother believes they may be vulnerable to demon attacks at night. Once Kyojuro Rengoku slays Slasher before her eyes, however, she rectifies this belief and apologizes to her grandmother for doubting what she'd said.

Fuku is a young girl of a short stature, with long dark brown hair worn in a braid down her back. She has dark purple eyes that fades into a violet color lower down. Her irises are white and vertically rectangular. Fuku wears a plain red and brown haori over a white-collared shirt, as well as a white kappōgi, which seems to be the uniform of the bento shop she works at. She also wears a tan-colored peaked beret and a pair of large round glasses.

As an ordinary human, she doesn't possess any additional powers or abilities.