[Well, he's not entirely wrong, but Ren has a reputation to maintain here. And also it's nice that he can get Shun to play along a bit even though he must be feeling awful and not at all like joking around.]

Hmm, if you really think that, you must not know me as well as I thought~

[He doesn't have very far to go before he reaches his first shinki's room, and he knocks on the door loudly enough to wake him up and also probably to be heard through the phone. While he waits for Michiya to come to the door, his attitude sobers somewhat.]

I'll try to get ready quickly, so you won't have to wait too long.