Xingtetsu: Why is the captain on the train?

The common ambition of the [Ferryman] and the [Captain] was fulfilled.
However, he did not expect that after softening countless [imaginary singularities] and finally weaving an absolutely stable world in the quantum sea, the captain was inexplicably upgraded, passed through countless world bubbles, floated out of the quantum sea, and finally came to the universe where the imaginary tree really existed.
The only person accompanying the captain was Miss Moonlight Oath, who rushed up without hesitation and held the captain's right hand at the moment of his promotion.
However, in this new world, the captain always sees some familiar yet not so familiar things.
The Star Train? Why does this thing look so familiar?
Walter Young? Oh, you're the real one, that's fine too.
Navigator Himeko? Would you like to hear the story of Himeko Muliangta?
The Mother of Falsehood? Cocolia!
Rakshasa? Otto!
[This is the story of a captain struggling in the quantum sea, who completes his great deeds and is promoted to the world of the imaginary tree, where he embarks on a new adventure. ]