Yuya has been visiting her house frequently lately. The purpose is to meet her mother, Yuzu. While dating her, Yuya was aware of Yuzu as a woman. This is not allowed. But ... Two young people and a mother. The relationship between the three was maintained in a dangerous balance with mixed feelings. But one day, the relationship collapses at once. It was Yuzu who collapsed. When we were alone for some reason, Yuki showed a woman's expression for the first time ...