[Oh jeez. This is hitting him like a bolt out of the blue, in the best/worst way. There's a long, confused silence while he tries to assess and make sure he's not just hearing things, before he finally manages to stammer the most predictable reply:]

...M... MISS LUMINE??????!!!

[Sorry she has to get used to Communion all over again, because she's getting a crash course in the emotional aspect via the explosion of Ryunosuke's abject shock/joy/disbelief now.]

You... You're here... You came back...? I-- I...

[Get it together now, Ryunosuke.]

It's. It's so good to hear from you again!