Namco Bandai has a follow up to Rurouni Kenshin: Saisen and Rurouni Kenshin: Kansen ups the roster to over 30 fighters. Takeda Kanryu, Sagara Sozo, and Han’nya are confirmed as playable characters.
Ruroruni Kenshin: Saisen also has two story modes to follow – the anime version and the OVA version. Look for it on August 30 on PSP.