Seiso na Ano Ko ga Kyoushitsu de Onani!? ~Nozoite Shimatta Hi kara Hajimaru Ero Life~

Yui Narukawa masturbates in the classroom after school. She is the most beautiful girl in the school, with excellent grades, neat and gentle. Tomoki Inomiya, a man who cannot refuse her, happens to take a peek at her. He tries to quietly leave the scene, but Yui notices him. He asks her to keep it a secret. The next day, after school. Yui asks Tomoki for a favor again. The contents of this request are… “My masturbation ……!　I want Inomiya-kun to see it!