The Boy from the Deep Forest
Lord Yukimora asks Sasuke to help demon eyes Kyo and the gang get to the opening of the forest of trees, but on the way Sasuke meets up with an old friend.
Aired 17/09/2002EP 12 - The Boy from the Deep Forest

2002
SAMURAI DEEPER KYO
In the year 1600, during the battle of Sekigahara, warriors Kyoshiro Mibu and "Demon Eyes" Kyo - the legendary slayer of a thousand men - engaged in fierce combat. Both men disappeared when a meteor crashed in the battlegrounds. Four years later, Kyoshiro is spotted on a rural highway, acting as a traveling medicine salesman. He is captured by the female bounty hunter Yuya Shiina when she discovers that deep inside him is the dormant personality of "Demon Eyes" Kyo himself.
(Source: Anime News Network)