The Japanese story of Urashima Taro is the first children's story he encountered. Urashima Taro saves a tortoise, who in thanks brings him to the underwater palace of the Dragon King where he receives the royal treatment. One day, he suddenly wants to go home. The Dragon King gives him a treasure box and orders him never to open it under any circumstances.
〈浦島太郎〉是他最早接觸的童話故事；漁夫浦島太郎救了海龜，海龜為了報恩，載他到龍宮，受到熱情款待，有一天，他突然想回家，龍王送他一個寶盒，叮囑他無論如何都不能打開。