Rio Ohara's second release from the NIKUYOKU label is an episode featuring a lustful, horny big sister living across the hall. Recently moved in, Kotaro accidentally catches a glimpse of her changing. That night, he sneaks another peek and finds her masturbating—so aroused that he starts jerking off on the spot. Their eyes suddenly meet, sparking an exciting turn of events full of anticipation. The sudden, unexpected developments in everyday life become the key element drawing viewers in.