I was home alone at my wife's parents' house when my sister-in-law, Mio, suddenly came back. I couldn't help but be drawn to Mio, who exuded a natural allure that my wife lacked. Noticing my gaze, Mio also seemed to have an explosive feeling of fragile affection for me. Mio, whose marriage was not going well, was pregnant and everything was going smoothly for her sister, who had a happy family. In a state of mixed maidenly heart and jealousy, Mio demanded unprotected sex, riding me and squeezing out my sperm in the missionary position, and I could only repeatedly experience intense erections and ejaculations as she seemed eager to conceive.
