SNOS-403 I’m the classmate who gets secretly screwed every day at school by a girl whose adolescent sex hormones are surging—so much so that she even masturbates on the sly during class. Sakika Shirakami

"Shirakami-san! We're going to get caught!" "It's fine... Just let me in, okay?" I never imagined I'd experience days like this—so far removed from the ordinary... --- One day during class, I was blankly watching Shirakami-san—who was quiet and reserved, yet cute—from the seat behind her. I was thinking about how cute she looked from behind when she suddenly started making some strange movements. She was masturbating! Her hand was fumbling around her crotch!! What's more, she had her smartphone hidden behind a textbook on her desk, and a huge cock was displayed across the entire screen! Someone as serious as Shirakami-san, masturbating right in the middle of class... Before I knew it, I was jerking off to the sight of her. I was so engrossed that I climaxed—and ended up staining my underwear. When I happened to look up, I saw Shirakami-san looking right at me. Our eyes met. Oh no... Did she find out...? The final bell rang, and Shirakami-san walked over to me. "Come to the empty classroom on the third floor later, okay?" My heart was pounding at this unexpected turn of events as I headed there... And there she was—Shirakami-san, wearing incredibly erotic, see-through lingerie. Forgetting we were at school, I was overcome with intense arousal and devoured her. Thus began a thrilling school life for Shirakami-san and me.