Rain was both relieved and incredibly frustrated to be in Hakuba's world; while he was there, god-knows-what was going on in his own world, and he still had so much to do. Eris may've slowed him down, but Rain had no intentions of giving up his quest anytime soon.

... yeah, Ori was probably wondering what happened to him, as well. Not that Ori wasn't completely capable of taking care of himself without Rain (after all, somehow he'd managed before meeting him.)

Rain settled down on the table where he'd been put, watching Hakuba from there.