During the summer vacation, I took care of my nephew, Tetsuhito, at my house. My husband was on a single assignment, and my son, Takashi, and I lived a lively life, but Tetsuhito has always been strangely close to me. Is it because he lost his mother at a young age and sees me as a 'mother figure'? Takashi, on the other hand, is upset because he thinks I am being taken away by his cousin. As we live together, the strange sense of distance between family members grows, and it appears before me in an unexpected form.