[Does he look that bad that not even one of his trademark Charming Smiles can distract from it? He does feel awful -- he felt worst of all around Hayame, for some reason -- a cause he hasn't yet been able to attribute but is down to the curse of being a Stargazer.]

Ah-- I've been better, but I'm okay. The tea will help perk me right up.

[He'd ostensibly wanted to do this for Byleth, but he does have to admit the outing will do him some good too.]

Oh, right! I got a present for you on the way. [Subject change! He pulls a book out from his cloak and offers it to Byleth; it's a dense-looking tome on magical theory.]