When her only daughter, Yurina, was young, her husband died, and Mio raised Yurina with her own hands. Such a daughter also got a boyfriend when she was older. My daughter's boyfriend was a second-generation liquor store owner and a very friendly young man. Mio was very happy that the young man was her daughter's boyfriend. Simply... The young man had a back face ... Right... - Impossibly unequaled ... He was a strong man. - One day, Mio was shown to a young man who was erecting. "I can't believe I'm attracted to my daughter's boyfriend's Ichimotsu ...", Mio who was desperately keeping her reason. However... Instinct disrupts reason... What is the decision taken by Mio who can no longer stand it ...?