[ He's not really expecting an answer right away - he figures if everyone's waking up and looking around for each other, it's probably gonna take a little bit. Still, he has to reach out to her. She's his friend. And he's been worried so damn sick the entire time he's been separated from the rest of his friends...

So, well, here goes nothing. Time to leave a message. ]

Rei-san... whenever you get this, mind calling me back? Or, you know, just a text. Something. [ Hesitant pause... and then, he steamrolls ahead. ] I just wanted to make sure that you're back in the city too. And that you're okay. 'Cause that was... that sure was something.