As the girls who defeated Koji Kashin in a previous battle are nursing their wounds, they were searching after Terumoto Mouri had obtained "Haruna", a jewel imbued with enormous power.

At the same time, there are reports that Ujimasa Houjou, who was a close ally of Kenshin Uesugi and Shingen Takeda, is leading demon forces from Odawara.

Kenshin and Shingen hear this unbelievable news and quickly chase after her.
However, what they found was...