KTRA-486 Mikuru Byakuya, A Vulgar Everyday Life That A Neat And Careful Little Sister Will Sexually Process You

Mikuru is a serious, cute and caring younger sister. One morning, I decided to help my brother who overslept change his clothes, but my brother's crotch is getting a morning erection! My brother who got excited by his sister who was surprised by his erection made his sister touch his cock and let him help cure his erection. From that day on, my brother began to use his sister for sex treatment.