Rurouni Kenshin: Yahiko's Reversed-Edge Sword(1999)

Rurouni Kenshin: Yahiko no Sakabatou

It's been a few years after Kenshin gave Yahiko his sakabato. Kaoru sends Yahiko off to another dojo to look after the master's daughter while he's away. But when Yahiko arrives, the place has been already taken over by extremists and Yahiko is taken hostage as well. Now it's up to him to save the day.