To participate in training, Aunt Yuko came up to Tokyo and was put up by her nephew Ryoichi for a few days. 'Aunt Yuko must have aged,' thought Ryoichi, but his imagination was shattered the moment they reunited. Seeing Yuko unchanged from before, Ryoichi couldn't hide his surprise. 'Being alone with such a beautiful aunt for four days...' Even though he knew it was wrong, Ryoichi couldn't suppress his excitement...
