The amusement's still there, and the warmth.

So, however quashed, is faint uncertainty. It's not that he's unwilling, in any way; it's only that Trowa's kissing experience is, well. Minimal.

Which is to say, he's dodged kisses from strangers a few times in his life. But that's it; even family kisses to the cheek or head weren't something he really got as a child.

So this is new territory.

All the same, he lets the corners of his mouth lift a little more, and brings his left hand up to lightly (and tentatively) match, and doesn't move away.