幼い頃に両親を亡くした俺たち兄妹は、辛い時も手を取り合い2人だけで生きてきた。妹も成長し、婚約者を紹介された時は素直に嬉しかった。婚約者とセックスしている妹を見てしまうまでは…。嫉妬に狂った俺は、妹を奪い返し中出しを繰り返した。これからもずっと一緒に生きて行こう、と互いに誓い合いながら…。

My sister and I lost our parents when we were young, and we've supported each other through tough times, just the two of us. When my sister grew up and introduced me to her fiancé, I was genuinely happy. That is, until I saw her having sex with her fiancé… Driven mad by jealousy, I snatched her back and repeatedly ejaculated inside her. We promised each other that we would live together forever…