Rennyo's grandson, Kuzei, led the people into revolt since they felt their Honshōji beliefs were being robbed by Ieyasu's failed campaigns and sought to "reclaim" their origins.

The reasons for the family vassals joining the rebels may stem from their desires to overtake Mikawa or due to lack of trust for Ieyasu.

Confronting their former master at Noha Castle, Yoshinobu and others fought against troops led by Ieyasu's suppression forces.

Those who felt sympathy for the rebels thought they had failed to live up to the people's trust, their loyalties hurt by Ieyasu's choice to subjugate them.

He was made the main guard of Hamamatsu Castle until he noticed his lord's distress and personally rode out of the keep with twenty horsemen.

Yoshinobu was able to meet up with Ieyasu and their men frantically thrashed against Takeda Katsuyori's cavalry in hot pursuit.