The problem is that Jiang Cheng does not want to leave, even if this is just another game being played upon him by the train. He had promises that he had needed to keep, of course, and he knew that he had sworn to help Madoka, that he had wanted to stand by his brother's side... But his Sect needed him, required him to support them and guide them; it's his duty and his honour to do so. Having to abandon it once again, this time somewhat by choice, makes him feel as though he has eaten something sour.

It's likely something the others can feel, too, thanks to his empathy, not that he is paying much attention to his self-control at the moment.

"Of course he is," the scowl on his face appears once again, as it often does when his brother is involved. There's a part of him that's glad, but after their goodbye on the platform it feels awkward and painful to imagine Wei Wuxian sending them out here to get him. He doesn't like it, but that's obvious.

Looking around, he does not even seem to consider taking Tidus' hand before he sighs and motions back towards the main compound.

"I need to make sure nothing urgent needs done before I go." He doesn't even care if this version of his world isn't real, that whatever he does here might not matter. He doesn't care, not when it means something to me. "You can come and look around if you want."