Kousuke Sakaki was a student and a swimmer who was hoped to participate in the world tournament. However, Kousuke was involved in a big accident trying to help a pedestrian. He was put into a coma as a consequence, but he miraculously regains his consciousness. Even though fate was against him, Kousuke starts moving towards his “dream” again. Although he miraculously awakened, he couldn’t put strain on his body. As the Winter season was about to begin, Kousuke’s environment kept on becoming tough. At such time, a certain person comes to his school. The person was related to the Saint Étoile Girl’s Academy, full of students from powerful families. That person tells Kousuke, “If you wish, our school will do what we can to help you” Supposedly the person who Kousuke saved during the accident was a noteworthy figure in the Saint Étoile Girl’s Academy. Kousuke makes a decision. Nothing will change in this situation, so he decides to do what he can. He accepts the invitation and transfers to the all girl’s school, Saint Étoile Girl’s Academy. It was also the first time for the cloistered girl students to be so close to a guy of their same age…