Can I Find a Bat While Cosplaying as a Nobody's Superman?

Superman, coming back from an away mission to find that Earth has blown up: Who am I? Where am I? What happened?

With nowhere else to go, Superman began wandering aimlessly. Then he ran into the Astral Express. Since he had nowhere else to go, he boarded the train, set out on the path of Trailblaze, and became a Nameless.

Then, during one of his journeys, he met a man who looked exactly like Bruce Wayne, AKA Batman, and might be a Stellaron Hunter.

Superman decided to investigate.

Then they met on the Earth where one of their counterparts lived.

Here is their conversation as cosplayers:

Cavill, Superman cosplayer: No, how can you change my backstory? Isn't Batman on the Path of Nihility? How did he become an undying dragonkin?

Mo, Batman cosplayer: You think I wanted this...? I wasn't even planning to cosplay Batman in the first place.

Cavill: All right, then we'll just have to play it by ear. Let's hope the world's consciousness can help us sort out our backstories.

Mo: ...You might as well put your hopes in Aha, Nameless.

The DC timeline is up to your interpretation. The Honkai: Star Rail timeline is after the crossover story, before version 3.0.

Superman/Batman pairing. The cosplayers themselves are just friends.

Thesis: May this journey ultimately lead us to the stars.