It is a beautiful sister who should be able to put out the hand absolutely and I do not connect blood. The day when the two who lost the connection of an elder brother drowned in forbidden vagrant affair. Tozaki ayame

The beginning of the summer when I heard the sound of the cicada, my sister and my sister, aunt, returned to my parents' home on my seventeenth anniversary. It was because there was the existence of the elder sister and Ayu to return to the home like every year. It is a gentle yearning elder sister who took care of me instead of mother who died early. Both are married, but I still have a special desire for my sister over my family. And in the night when the law was over, we were called by the father of a strange father, and we were confused that it was not a real elder sister...