Ayaka lives alone while her husband is away on business. She is a serious and sensible young wife who was asked by her neighbor to be a tutor for Makoto. But one day, she can no longer control her sexual desires that have been building up due to her husband being away on business, and she accidentally masturbates, which Makoto sees! Makoto threatens her and pushes her down… Will Ayaka become more and more addicted to Makoto’s young body and overflowing sexual desire…?