Masato, who lost his mother at a young age, was doing housework between schools and living side by side with his father. It was late summer when Masato was about to take his entrance exams when his father brought his remarriage partner, Yuri. For Masato, who grew up in a male household, living with Yuri was both embarrassing and confusing. The smell, the gesture, the gentle voice, the soft breast. A boy who had just reached puberty suddenly appeared, and it was inevitable that he would be conscious of her young mother-in-law as a woman.
