[ The description also perks Byleth right up too. He listens with rapt attention. Well, it's no more or less believable than anything else that has happened here so far. It sounds downright splendid. ]

What a wonderful holiday. I would like to participate if it's not too late- hmm. I will think about gifts for everyone... that sounds like fun. To be able to show everyone how much I appreciate them.

[ A nice way to settle in, he thinks. Being able to gift things to the people he loves. He's never had much of a way with words, but perhaps this will show them better, just how much he cares. ]

So this saint- do we get to meet him? How does he calculate goodness? How does he get in if you have your door locked? Surely that's a lot of people to visit in one night. Where does he procure all the gifts? Was Felix truly that well behaved?

[ All very important questions, here. He seems very invested in this though, intent on understanding. ]