The true nature of a girl who plays with her little penis, getting hard just by filming in her underwear BAGR-063

There are three bookish girls in my class. Worse, they often occupy my seat and talk to me. I'm a reclusive bookworm, and a virgin. One day after school, the three of them, as usual, occupied my seat, drawing penises and chatting happily. Then, they noticed me, laughed, and whispered. I heard them say something like, "Doesn't this look like a virgin?" I was both angry and pitiful, almost crying… After a while, the three of them suddenly started swaying their skirts and asked, "Is it hot in the classroom?" I could see girls' underwear that I usually couldn't see, and my crotch, which I least wanted to see, was getting bigger and bigger… Hey?! Ever since they discovered my weakness, whether at school or at home, they've been setting up pranks and playing tricks on me. My school life has become a mess, just like my little penis…