Koumyou smiles a little, faintly, for a second. "Yeah."

And then he starts to tug Devero along, using whoever is acting as stationary anchor to reel them both in with their help, so that the two don't end up wandering aimlessly around in the void.

Once they hit the platform, Koumyou does not stop. He won't stop until they're both on the train itself.