JUL-806 My beautiful older sister, who should never have let me touch her, and I are not related by blood. - A summer day when two people who lost the bond of siblings drowned in a forbidden creampie affair. - Yuuka Aota

At the end of the hot summer, I was returning home for my mothers 17th anniversary. - Every year, no matter how busy she was, she tried to go home with a reason because of her sister Yuka. - Her sister has been a longing woman who has taken care of me for her mother ever since she lost her mother as a child. - Both of them are married now, but I have always had more feelings for her sister than siblings. - Then, that night, we were called by my father at the end of the litigation and confessed that they were not real siblings ...