FJIN-131 My stepsister, who came into my life through my parents' remarriage, is a slovenly, unattractive woman, but she's incredibly sexy and defenseless with huge breasts. I got pounded and cummed inside by my stepsister... Shirayuki Mizuki - Mizuki Shirayuki

When I went back to my parents' house after a long time, my sister had completely turned into a loser. She used to be the type of girl guys flocked to, but now she's holed up in her room, engrossed in games and anime. Her hair is a mess, she wears glasses and sloppy loungewear—she's completely fallen into the otaku lifestyle. But my sister still treats me like her "subordinate." When she can't control her urges any longer, she'll call me over, saying, "Come here right now." The moment I open the door, she silently...