Sei is not a real mother. It was Sei-san that my father remarried when I was a kid. One year after I got married, my father died, and he raised me with just one woman. As a mother and a woman, my dream of being in love with Hijiri was to make Hijiri easier and happy. However, that dream collapsed in the hands of a bad friend, Takato. Takato who uses me to approach her mother, leaves early due to a false illness, and talks to Sei-san. I got anxious and came home quickly, and I saw a shocking sight ...