“Your uncle’s gonna show you how to have sex right…” While she’s asleep, the uncle plays with his defenseless niece until she comes…! Kana lives alone with her uncle. One day, her uncle witnesses her about to have sex for the first time at home with her boyfriend…! That night, he saw Kana sleeping and got turned on… After diving in on her soft, white breasts, she said, “Ah…! Mm…! Don’t…” Losing all sense of reason from her sensitive reaction, he stuck it into her soaking wet you-know-what!? Every night, he uses sex ed as a pretext… What’s going to happen to Kana now that she’s turning into such a slut…!?