The little kiss at his ear is enough to raise goosebumps at his neck. It seems that Dimitri understands the assignment. When they do arrive- ah. Well. He clearly does. Byleth isn't sure why he's surprised at all but it's already suitably flustering to have him kneel like that.

"Of course." He answers, feeling his face heat a little. Of all things, this is really actually what does it for him. He's sure many might find it amusing, hilarious, ironic. Be that as it may, it is simply how he is. He takes care though, to make room for Dimitri to easily pick him up however he pleases.