A few years ago, Junya, who lost his mother, lived side by side with his father. Junya's father brought his remarriage partner, Mayu, at the end of the summer before Junya took his entrance exams. For Junya, life with Mayu, who is too young to call her mother, was a series of confusion and temptation. A boy who has just reached puberty suddenly appears, and it is inevitable that he will be conscious of his young mother-in-law as a woman.
