It's been several years since I started living with my younger sister and her husband. Kaoru was satisfied with her enjoyable cohabitation life with her brother-in-law, Tatsuya. One day when work entered a busy period, Kaoru, who boarded the last train, dozed off from fatigue. When Kaoru, who had fallen asleep unconsciously, jumped up in a panic, there was Tatsuya in front of her, staring into her skirt and making his dick rock hard...
