Since I'm Not Popular, I'll Have a Good Dream - S1.E4

Tomoko reads on the internet that sleeping on one's stomach can lead to sexual dreams, so she immediately tries it, but has nothing but nightmares. The next day in class, a sleep-deprived Tomoko overhears some girls talking about being molested on a train. Tomoko begins to wonder why she never gets molested and calls her friend Yuu-chan to ask if it's ever happened to her...