Based on a game by Runesoft. Hatsushima Minoru was a high school student attending Seiou Kan Gakuen High School, which is located on a hill in a historical town. He spent a carefree campus life with his friends. One day in spring, his boy and girl friends announced that they had begun dating each other. Until then, Minoru hadn't wanted a lover very much. But he found he yearned for their relationship. After a while, when his little sister took him to a tennis match, he met Sakurai Momoko, who was his senior.