I thought transformation techniques weren't combat orientated.



That is, until I saw this. Funnily enough, large as that dragon may have seemed, the walls and ceiling were intact. It looks to me like the Shinra Banshou's still inside of Miharu, and he can't use it's powers without going out of control.

Though Fuuma-dono can transform perfectly, he couldn't imitate Miharu's eyes. Not those eyes.