Sinopsis:

At home, mom and I take turns at being in charge of sexual relief duty. The day begins with big brother's sexual relief, followed by sending off dad with a french kiss, and after meals it's time for boobs...

There's been nothing but abnormal rules in this house since I was a kid, and even sex is the norm for my family. On days I'm on sexual relief duty, I get immersed in sex until I'm completely exhausted. At school, I'm an honor student and fairly popular, but my family forbids me from having a boyfriend until I turn 18. I'm pent-up and at the peak of my horniness because both my libido and dissatisfaction have really been piling up.

For the sake of receiving permission to get a boyfriend, I'm challenging my mom to a who-cums-first loses sex match...

(Source: DMM)