"I want you to be my sex practice partner!" Momoka, a tomboyish childhood friend, invites me to practice sex with only one condom, saying she doesn't want to be embarrassed before her first time with her boyfriend. After finishing the sex practice that started with awkward movements, Momoka awakens to the pleasure of a dick. For three days while her parents are away, the two of them have sex non-stop with their sexuality fully exposed all over the house. Along with 11 ejaculations, she becomes addicted to unprotected sex...