Shiro freezes up initially at the kiss with a startled squeak, but... actually, this is nice, and so he leans into the kiss, cupping a hand on Wormwood's cheek.

Raven's face was already burning. Now it's practically molten. He sputters a bit, but. "O-Oh. Yes. That's fine. Kisses are fine." Hm... should he lean in? He'll do that. That seems wise.

He has momentarily forgotten that they are on ice.