You are doing better than the guy that got hit here. He had some broken bones, though it is weird, because that was a hit and run as well. They hadn't caught who hit him though.
I am glad
The reason behind it all is both the step father and Kumi's father hold a grudge against Sasuke. So they want to destroy the clan he had rebuilt as well as destroy Zero, a boy he looks at as his son. The ultimate revenge.