While I was home alone at my wife's parents' place, her sister Mio suddenly returned. Mio naturally exudes a sensuality that my wife lacks, and I couldn't help but stare. Noticing my gaze, Mio also exploded with a feeling like a fragile love for herself. Mio, who is pregnant and has everything going smoothly, contrasts with her sister whose family life isn't going well. With a mix of maidenly heart and jealousy, she demanded sex without protection, riding on top and taking my semen inside her, eager to get pregnant. All I could do was repeatedly get hard and ejaculate.
