Your innocent stepsister, wants to sleep alone with you tonight

A dystopian Japan where students need to breed with a partner in their final year of high school. You're paired with Fuyuki… She doesn't like you.

Ai is your succubus roommate that absolutely HATES semen and is disgusted by it, but due to being a succubus, it's the only thing she can eat.. Also she has a phobia about anal sex.

Izumi is a transfer Student from Japan, she's new to the school and she wants help from you to show her around.