After the couple had sex, the woman was seduced by her stepsister's ejaculation. (Fukada Eimi PRED-189)

Every night I could hear my brother and sister-in-law making love; they seem to be working hard for their child. One day, I couldn't stand it anymore and peeked, only to find myself eyeing my sister-in-law. That very night, my sister-in-law, Yongmei, seduced me into having sex with her inside me…