Natsumi Okuyama, a girl with an abnormally high sex drive and a lecherous addiction, MSET-001

With her short, jet-black hair and innocent appearance, she's actually a sex addict with over 200 sexual partners! And she's even in a one-night stand relationship with her brother! She'll sleep with anyone who's available! She squirts during masturbation, her nipples are so sensitive they can be played with to orgasm, and she has hairless genitals! She's practically the best masturbation student ever!