My mother's friend

Atsushi is pleased to hear that Airi, a friend of his mother, is returning to Japan after her husband is on a overseas assignment. After a long time, she has become even more beautiful... As they help with the move, the two of them gradually become closer and closer, and they overlap with what they once felt and eventually they end up having a relationship. The two continue to meet together secretly, not only as childhood friends, but also deeply connected by a bond of pleasure. However, Airi decides to cut off her relationship with Atsushi, saying that she can't continue this way forever...