An extremely general middle-class family. However, there is not the figure of parents there. The older brother has the feelings that are higher than a simple blood relationship for Younger Sister. The older brother shows strange interest in "the buttocks" of the Younger Sister. Have the attachment that is extraordinary in feeling touching it with buttocks of the Younger Sister, Koto smelling the So, Koto, feel of a material to taste. Photograph soishiki rising from Uniform with a camera, and let the meat stick which fought in Face Sitting of the Younger Sister come into a crack at the last minute. The Younger Sister which receives Play offering a poor horse rider to let clothing cut, and to look oily to a limit, oil to a friend. Problem product drawing the abnormal love of the brother, all four parts.
