This story is the eighth in the Japanese Fairy Tale Series by Hasegawa Takejir?. It is a Japanese legend about a fisherman who rescues a turtle and is rewarded for this with a visit to Ry?g?-j?, the palace of Ry?jin, the Dragon God, under the sea. He stays there for three days and, upon his return to his village, finds himself 300 years in the future.
