Elderly Sister of the Giri…The wife of the older brother who it is Married Woman, and is a blood relationship. The inferiority complex to the older brother who got a beautiful wife treats a younger brother cruelly. The younger brother who begins to be conscious of a sister-in-law as an object of Sei gradually. The greed of the So swells at time without the older brother, and accomplish thought…Elderly Sister of the Giri which cannot refuse a younger brother to press for relations of the Kindan. Two people who Immorality and a pleasant feeling wrap up a younger brother and a sister-in-law, and flare up in the Koufun which there was not so far. The sexual relationship that deviated from morals…Will the beast of loving two people have the happy Irai as the greed takes a turn?