During the summer holidays, I decided to take care of my nephew, Tetsuto, at my house. My husband has been working away from home, and my life with my son, Taka, has become lively, but Tetsuto has always been strangely close to me... Perhaps he sees me as a mother figure, having lost his mother at a young age? Takato, on the other hand, is in a bad mood, thinking that I was taken away by his cousin... As we live together day by day, the distance between our family members is getting stranger, and this feeling appeared before me in an unexpected way.