Sanosuke spent his childhood as a member of the Shinsangumi, working for the Meiji goverment, but later became the goverment's skape goat. Sanosuke was one of olny two members of the Shinsangumi to survive the goverment's rath over the shinsangumi. Sanosuke spent the next majority of his life working as a fighter for hire. He then meet Kenshin and hated him for being an imperialist (as imperialists were the ones who killed the members of the Shinsangumi). However Sanosuke later acsepted that Kenshin wasn't the kind of imperialist he thought and they became freinds. Although he dosn't live their Sanosuke spents most of his time at the Kamiya Dojo with Kenshi and company.