Recently, Yuya has been visiting her house more frequently. The purpose is to meet her mother, Yuzuki. Even while dating her, Yuya is conscious of Yuzuki as a woman. This is not allowed. But... Two young people and their mother. The relationship between the three of them is maintained on a precarious balance while carrying complicated feelings. But one day, that relationship suddenly falls apart. It was Yuzuki who caused it to fall apart. When they happen to be alone, Yuzuki shows her feminine side for the first time...