The story about Urashima Taro - Miffy has provided a brief story about Urashima Taro below
Note: Urashima Taro is quite a well-known Japanese fork tale. Several Japanese animations, such as Doraemon, often talk about this fork tale.
Urashima Taro is a title of an old Japanese fork tale and also a name of the hero. Basically, a man called Urashima Taro saves a giant turtle from few children who have been bullying it around. In return for the rescue, the turtle invites Taro to undersea Ryugujo (Castle/Palace of Dragon) where a beautiful princess Otohime lives. Taro spends days having parties there, but finally decides to go back to the real world to take care of his old mother. Otohime gives Taro a Tamatebako as a souvenir, a box that must not be opened. When Taro comes back, he does not recognize anything and could not find his aged mother. The days he spent underwater were in fact equivalent to years in real life. In despair, Taro opens the Tamatebako and turns into an old man himself. By the way, Gosho made Sayaka (from Yaiba)'s ancestors Otohime and Taro and thus making her a Dragon Priestess
