Episode 1 "greed Mizuki to a sister-in-law" and Yoichi lived a peaceful life under brothers, one roof which were not connected of the blood. However, Yoichi who begins to be conscious of Mizuki as a woman increases a sex desire for the Elderly Sister as I become of marrigeable age…. Be the Parent and child that the blood is not related to Episode 2 "jealousy Satoko of the Stepmom" by Keisuke. While I live I take each other's hands after Takeo of the husband died life, two people are bound together with the thing beyond relations of the Parent and child….