密室、同級生６人、俺以外は女子　ナニか起こらないと出られない部屋 (Associated Names)

Kasamoto, a student, suddenly finds himself locked in a white room. In the same room are five girls from his class, all beautiful girls. Perplexed, a mysterious message appears before them. It says that they cannot leave the room unless they have s*x. In this mysterious situation, an awkward atmosphere flows between Kasamoto, the only…