Castiel is a little nervous about him -- Kisuke can tell; and, truthfully, it's no wonder, although they come from strangely similar backgrounds. A universe and a culture apart. He presses his lips together, before offering Castiel the sunniest smile he's capable of. Something that manages to be without the bitter tiredness his expression tends to carry.

It's a happy day. It's a celebration of love, mortal or otherwise.

"It's not what I'm used to," he tells Castiel, before making it a joke. "The guests are better-behaved and less dead. Congratulations on your life together. I hope it's as long as it needs to be."