MIAB-597 The four of them graduated all the boys in the school. Miyu Aizawa, Karin Kitaoka, Hana Honjo, and Tennen Mizuki

It seems there are two groups of girls who are searching for and preying on virgin boys all over the school...! The cheerful gals Mizuki and Karin go around asking any guy they can find on school, "Are you a virgin?" and if they find out he's a virgin, they immediately start a power play to hunt for virgins. Meanwhile, Miyu, the school's Madonna who appears serious on the surface, relies on information from the well-informed Hana to research virgin boys. The two groups share a virgin's virginity using a surefire method. "Hasn't the number of virgins on school been decreasing recently?" The two groups start to feel suspicious, but then they end up crossing paths...