PRED-189 After having sex to make a baby, my wife's sister is tempting me to have unprotected sex. Eimi Fukada

Every night, I can hear the sounds of my brother and his wife having sex... It seems like both of them want a child and are actively trying to make one. One day, unable to hold back, I peeked into their bedroom and saw my brother's mechanical sex boring my sister-in-law Eimi. Our eyes met. That night, Eimi invited me to ejaculate inside her. After that, whenever she had sex with my brother to make a child, she would always come to me seeking my sperm in her womb. Whose child will Eimi end up pregnant with, mine or my brother's...