SNIS-901 I get angry and aroused by the sight of my sisters (2) being hugged by local DQNs to protect me. Sasagawa Riko Himezuki Rui.

Rihoko Sasagawa and Rui Hizuki's first joint work!! I was surrounded by my proud older sisters, spending happy days. One day, a notorious delinquent senior from our hometown set his sights on my sisters… The next day, he started coming into our house and unjustly inflicted violence. To save me, my sisters were forced to obey him and had every part of their bodies ravaged… It should have been frustrating and disgusting, but strangely, an odd feeling began to well up from the depths of my heart…