Segawa Akira is an ordinary high school student. But there are cute older girls around him: Hinomiya Yu is a teacher at his school; Takamori Sana is a childhood friend The hero lost his father in early childhood, did not have a brother, so the girls who played with him when he was younger are like family for him. As he got older, he began to notice some changes in his body - all this happened when he was thinking about his girlfriends. He decided to consult with the school nurse, Tachibana Kimika. She was very beautiful, so the hero got up. He was embarrassed, but the nurse calmed him, showing unusual ability to solve such a difficult problem. Akira experienced true bliss. He had heard about “birth control,” but that was not a problem. Down with boring days! It's time for a lecherous adventure! Poor hero, he did not yet realize all the danger that lay ahead of him ...