A man who started living alone in an apartment in Tokyo for his university life. One day, when he went out to the balcony, he found the panties that had been hung to dry next to him that morning lying on the floor. When I hurriedly delivered it to the neighbor, a half-naked beautiful wife, Yui, came out. From that day on, your dream-like apartment life begins. Yui's changing clothes can be seen from the balcony, and Yui's panty shot and husband are cleaning.