STARS-375 My Sister-in-law Who Never Wakes Up Is Dive Into A Non-rem Sleepy Futon Iori Kogawa. My father was a rooster who raised children. When I was an adult, he married another woman who also had an older daughter named Kogawa. Kogawa is younger than me, so of course I suddenly have a younger sister. The thing worth mentioning here is that she looks beautiful, cute, and especially delicious. On the first day of living in the same house, she made it impossible for me to concentrate on work because of the noise she made while talking to some random boyfriend. It was at that time that I peeked at Kogawa's seductive butt, and then when Kogawa went to sleep, I sneaked into her room to... .