[He is very clearly not fine, and Sylvain is buying none of what Dimitri is selling in that regard. His eyebrows are pulled in, slightly, and while he doesn't frown exactly, his usual smile isn't there either.]

Hey... slow down. It's okay. Claude... Claude sent me a message that sort of explains things. I have been here before, or was here already, but now I don't remember I guess. And how sometimes weird stuff with time and where we come from happens. I don't really get it entirely but...

[He does frown properly, wishing he could reach out and touch Dimitri on the arm or something.]

I get that I disappeared on you all and now I'm back with no memories. That has to be hard. And kind of creepy, probably.

[It explains why Dimitri looked at him like he'd seen a ghost at first, but Sylvain won't say that out loud.]

I admit I'm pretty confused but I'm sure it'll sink in eventually. I'm... more worried about all of you. I can't imagine how much of a mess I'd be if you or Felix suddenly didn't remember a bunch of stuff that happened.