While his parents are away on an overseas trip, his nephew, Ryo, ends up staying with his aunt, Aya Nakazawa (Shoda). Invited by a nasty voice leaking from the bedroom, I peek at the aunt couple's SEX. Even though she is aware that she is being watched, Aya becomes bold as if to seduce Ryo. From that night on, Ryo's head is filled with his aunt's lascivious appearance. Aya gently approaches Ryo...
