|Dates are from the Isawa Calendar|
|Centuries:||9th century - 10th century - 11th century|
|Years:||920 921 922 - 923 - 924 925 926|
- The love of Usagi Nidei, a Crab samurai-ko, disappears in the Shadowlands.
- Nidei defies his mother, the Hare Clan Champion and takes the Hare Clan Sword with him into the Shadowlands. Nidei does not return and the blade is lost for centuries.
- Usagi Nidei (date approximate)