She has a cute younger brother, not a sister. What they call a 'tomboy.' He's really taken to me and is incredibly cute. That little brother Rui-chan shows off his erect dick and tries to seduce me with all his might. When did he find out I'm into tomboys... The thrill of being stolen away for sex next to her while she sleeps, the excitement of the taboo, we made love in a place where she wasn't.
