Serizawa Yakumo

"A maiden's skirt is full of secrets. Didn't you know?"

A first-year student at Youkou Academy. She calls herself a "normal female student." She's an introverted girl with a dark side. Her grades are above average, but she's not good at sports.

She has a serious and meticulous personality, and although she doesn't say much, she has a strong will and a stubborn side. She occasionally shows a strong sense of justice that she might get from her father, a police officer. Her recent hobby is investigating rumored strange incidents at school.

In the small belt pouch wrapped around her thigh are a variety of "maiden's secret gadgets," such as a dildo, a vibrator, and a stun gun.