[It's a strange mix of emotions whirling through his mind and he isn't sure what to say to that. Hinata obviously cares about his well being, he'd be an idiot not to see that. As he sets the kit to one side of his friend he finally says,]

I can't make any promises about real fights. But I will be more careful when fighting against you.

[He'd need to very careful in order to keep up anyway. He turns back away to grab a towel and passes it to Hinata before he sets to work.] I assume your back is giving you some trouble.