Tachibana is a swimsuit idol, everyone in school admires her, treats her like a celebrity, not like a friend. Tachibana feels like she is a bit distant from everyone, so she finds ways to be closer and more sociable with her friends. When passing by a classroom and seeing a junior student on duty alone, Tachibana immediately took the initiative to help. Because she was wearing a short skirt, when she bent down, her panties were immediately exposed, making the student unable to take his eyes off her! Suddenly Tachibana had an idea, she would let this male student fuck her so they could both become friends! And from then on, Tachibana had many new friends. From the two students who hid in the closet to secretly take pictures of her changing clothes, the student who skipped class to masturbate, the exemplary student who studied well... All of them were invited by Tachibana and became her friends!