When Masato Nakasuji was in his third year of junior high school, he fell in love with his classmate Ayana Sairenji, the most beautiful girl in his school. Masato, a fat otaku, starts a diet to get closer to Ayana. Nonetheless, he graduates from middle school before seeing any results. However, after the opening ceremony of the second semester of the first year of high school, Ayana’s best friend, Chika Miyahara, brought Masato to a family restaurant. Ayana, who was in front of him said, “W-with me… please go home together with me!” A request from her came.