Sousuke Kawara

Debut: Episode 3 "Hellhounds for Hire" (part 1)

The 12-year-old son of Heitarou. First appears being tutored by Osuzu, then turns up in fight trying to get the deed to Osuzu's father's store back. Jin saves him from a beating and becomes his bodyguard.

(Source: Neko-san's Guide to the Characters of Samurai Champloo)