Getting hit in the head with a huge mythical club would send just about anyone flying. It wasn't all that much different for our resident samurai ninja. Hattori's pain receptors were having quite the party, as the impact possible cracked a few of his most important bones. As he landed just a few feet from where he was hit, quite the amount of blood was spilling out of both his nose, eyes, and even his ears.
Although it was probably more painful, than just about anything he had felt before, it still couldn't top getting ripped apart by a feral lioness. He just about managed to gather himself, and slowly stumbled back on his feet. His balance wasn't really functional, as even his ears suffered quite the damage, yet even then, he had the instincts to overpower that lack of basic function.