Exclusive third installment! Ichinomiya Kihou's first drama challenge! My house lost power and gas, so I ended up staying at her place. She has a younger sister, but this is our first meeting... she seems to be wary of me. That night, after being rejected for sex by her, I was caught masturbating by her little sister! Since the little sister seems easy to push around, maybe I can do it with her... A week of secretly going at it with her little sister without her knowing. The little sister's temptations are escalating...
