A tamatebako "jeweled hand box", "jewel box", "jeweled box", "treasure box", "casket", etc., is a mysterious box that in the Japanese folk tale "Urashima Tarō", is a parting gift that the fisherman Ur
Oto-hime gives the tamatebako to Urashima Tarō (Matsuki Heikichi, 1899)
Urashima Tarō opens the box and is transformed into an old man (Matsuki Heikichi, 1899)
Ryūgū-jō or Ryūgū is the supernatural undersea palace of Ryūjin or Dragon God in Japanese tradition.
Tamatebako
…Japanese folk tale "Urashima Tarō", is a parting gift that the fisherman Urashima Tarō receives from mistress of the sea (Otohime), after his stay at the Dragon Palace (or Hōrai), to which he was invited after saving a turtle. Katami no hako "memento box" is another name by which the box is referred to in the tale…
The Spring side of the palace, cherry blossoms on the trees
The Summer side of the palace, Urashima and Otohime walking on a bridge
The Autumn side of the palace, Urashima and Otohime watching deer
The Winter side of the palace, with a light snow on the garden