Gakuen NTR: Boku no Shiranai Kanojo no Kao

Yuuta, a high school, is sick of being a virgin. He wants to have a girlfriend before the end of the summer term. After getting rejected by his classmate, Marine, he wants to aim big. His future girlfriend has to be one of the school's idols. Luckily there are Hina and Miyu, his classmates who work as bikini models for cheesecake advertisements. Yuuta is not the only one, who has taken an interest in them, though. (Source: VNDB)