They were on the train, whoever's memory it was and someone else. Some hair brushing thing, with fingers... Memory guy, I'm guessing it's Minato, couldn't decide if he was a god or not, because he couldn't control the train- where it goes or what happens to it and that it's-

[Repeating it is making him recall more of the details.]

They can't control the train, but someone else can. Whoever this guy's talking to and it isn't Souji. He said he and Souji were from "nowhere" and they think that's the best ending whoever this other person is, is going to get. But they don't know.