|Dates are from the Isawa Calendar|
|Centuries:||4th century - 5th century - 6th century|
|Years:||497 498 499 - 500 - 501 502 503|
- Heichi Shizugai witnesses the murder of Mirumoto Chorude in an illegal duel with Matsu Dainoku.
- Boar Clan Champion Heichi Batsuda stands in for his son in the duel against Dainoku.
- Heichi Shizugai becomes Boar Clan Champion.