甘夜ひゆり

A female student who goes to the same school as Haruki. Although they are classmates, they are in different classes and do not know each other.

She is an honor student with excellent grades and good conduct, and has won prizes in art clubs and competitions, and is well known within the school. In reality, however, she is a whore with a dark side who lures men into her bed and gets wild in the nightlife.

She is an M girl who gets off on making herself dirty as an honor student, and an S girl who gets off on dominating men who are inferior to her. She is a bitch in the shadows who slowly destroys her prey. She prefers honest and stupid men.