[Eventually, some of the tension does loosen from his shoulders more, calming under his touch, and it turns into a kind of slumping into Shiro's arms. He nods a couple of times, finds his voice properly again.]
I know. You're right, I... [Rather than deflect to the 'I'm okay's from earlier, he cuts off, then this time he murmurs, just quiet and grateful.] Just glad I'm with you.