Gakuen Pets 3 ~Seieki Mamire no Toshokan~

Tetsuya is fed up with his school life. One day, he accidentally gets a secret of Maiko, his classroom teacher, and has sex with her. He also shags with Saori, his old friend. He isn't satisfied yet.... He sleeps with Madoka, a member of the swimming club, using Maiko as well. His next target is Yoko. She is quiet, but Tetsuya just wants to know how she will let out gasps and twist her body....