Plot Summary

"My sister is crazy. It feels great, sex." I have sister-in-law who my father remarried. He has a name of Miharu. One weekend, when my father and mother went out and left home, the relationship between me and my sisters changed dramatically. If you have a physical relationship with your sister Shinon in front of your sister Miharu, you will have sex as it is. And we just enjoyed SEX for three days without parents.