It settles him a little, to hear you laugh. To know that there is genuine fondness and amusement there. Perhaps he should have a word with the others at some point about how too often familiarity can breed contempt if one is not careful.

He won't offer to walk you to your room even if he wants to. He's been watching the way you've been moving in these last few minutes and he can say with good conscience that while you are not physically well yet, you will be, soon enough.

( As for matters concerning the heart... well. That is for another time. )

"Good night, Hikaru. May your dreams be sweet." He means that, by the way.