|Dates are from the Isawa Calendar|
|Centuries:||4th century - 5th century - 6th century|
|Years:||436 437 438 - 439 - 440 441 442|
- War threatens over trade disputes between Crab and Dragon Clan.
- The Katai family is formed as vassals of the Akodo. They are charged to take care of the forest Kokoro Nezuban Mori.
- The Ki-Rin Clan reaches the port of Aqahba. Part of the clan sails overseas to the gaijin Merenae Kingdom.