My wife's sister pretended to comfort me while I was arguing with my wife, and I couldn't resist, so I kept ejaculating inside her. (Kuruki Rei BF-611)

Before marriage, I often spent time with my wife's younger sister, Ling, and I found her cute, but I never saw her as a woman. Three years after marrying my wife, I ran away from home after an argument and ended up at Ling's house...