Living alone in Tokyo is too expensive! So I found a place looking for a roommate and decided to move in! Then... unexpectedly, my roommate is a woman! I, who have never even had a girlfriend, living with a woman alone! Dangerous! Just the good smell unique to women, something I've never experienced at home, makes me fully erect! And then, the underwear that was dried indoors comes into my field of vision! Even just that would make me cum, but when my roommate gets used to me, she wanders around the room in her underwear... Days of moaning and erect nights. One day, I witnessed my female roommate masturbating! It seems the woman is also horny, and when she looks directly at my erection, the situation changes! It's somehow a sexy mood... Maybe this life is the best!?