So we somehow ended up at the start of the train again, and had to go back to the control room. Julius is there again, but when he turns to the party this time, he goes shadowy with red eyes for a second. He tells us not to come closer, and that he'll take care of everything.

Choice between "What are you going to take care of?" and "... Got it". Taking the first, and Julius says there's no need to know while smirking. What's needed is... us to die apparently, because his face goes black with red eyes permanently this time, different than the dream, and starts curbstomping us in a cutscene before BOSSU BATTORU