The active teasing and seduction of her younger sister 'Mayu' drives me crazy! Her cute smile and sincere eyes confuse me! Sudden fellatio in the hallway, abruptly entering the bathroom for a paizuri, and finally secret sex in the bedroom while she sleeps next to my girlfriend! I know this relationship can't last forever, but I can't control myself anymore! Where will this forbidden relationship with my fiancée's sister lead…!
