Another history query re Samurai Deeper Kyo?

>
> In the anime noted above the story is set four years after the (gomen
> the spelling onegai) battle of 'Chekigahara' (Shek-ee-ga-har-a) and
> there is a big Samurai kenjutsu (sword fighting) tournament being held
> by the Shogun of the Toshowgowa Clan. My question is this--what year
> was that battle and was there ever such a tournament? Who won? The
> anime concerns a Battousai or Legendary manslayer nicknamed 'Demon Eyes
> Kyo' whose spirit/soul inhabits the body of a younger hero named
> Yushira. Looks like a cool series and I'm told it actually has an
> ending after 24 eppys. I think that Shina the gal bounty hunter's 3
> barrelled flintlock pistol is just smoke and mirrors and was never a
> real weapon since flintlocks do not have rotating barrels. Domo arigato
> for your assistance. Kami bless you all. Sayonara-K&K
>