[Ryou started at the unexpected movement. Suddenly being touched wasn't something he was used to by any sense of the word, let alone this. Not to mention the fact that the other boy looked exhausted. What is the appropriate response to this? He doesn't want to be rude, but he doesn't want to inconvenience this stranger, either.]

Ah-! Thank you!

[Despite his reservations, he gratefully accepts the support. Even if it's a little weird for a stranger to just grab him like that. Maybe it's a foreign thing.]

I- I'll be alright. I just fell, that's all, and I'm having a little trouble getting back. Do you know the way back from here?