While his wife was away on a two-day, one-night trip, Kenta was happy to be able to enjoy living alone for the first time in a long time. However, that was short-lived, as his wife's sister Suzu suddenly showed up. Seeing the mess in his room, Suzu helped him clean it up, but her real intention was to take advantage of the opportunity when his wife was away and release her sexual frustration on Kenta. Kenta, unaware of this, was taking a carefree bath when Suzu showed up...