My beautiful aunt comes to stay at my apartment...

His nephew Takashi is forced to stay in his room for several days with his aunt Yuko, who has moved to Tokyo to participate in the training. Takashi's imagination, "Aunt Yuko, I'm sure he's getting old," was overturned as soon as he resumed. Takashi can't hide his surprise when he sees Yuko, who is completely different from before. "I'm alone with such a beautiful aunt for four days..." Even though she knows it's a bad idea, Takashi can't contain her excitement...