Yuya has been visiting her house frequently recently, and the purpose is to meet her mother, Yuzuki. Even while dating her, Yuya was conscious of Yuzuki as a woman. This cannot be allowed. but…. Two young people and their mother. The relationship between the three of them is maintained in a precarious balance, with complicated feelings. But one day, that relationship suddenly collapses. It was Yuzuki who caused it to collapse. By some chance, when they were alone, Yuzuki showed her feminine side for the first time...