The Demon King's people heading to the Ten Thousand Ridges Mountain Range don't necessarily have to use the Campbell railway, as the Hell Dwarves on Shattered Rock Peak have long been friends with the Demon King.
Strictly speaking, the railway from North Peak City to Catastrophe Castle is actually the first railway in Aus Continent's history.
As for the Campbell railway, it should be considered the first in the Human World—
"Clang—Clang—"
The sound of wheels rolling over the track spaces echoed by the window, Erin occasionally looking outside, occasionally glancing at the door of the compartment, appearing restless.
At that moment, the compartment door suddenly opened, and Colin walked in from the adjacent compartment with a calm expression.
Those emerald eyes were like a startled rabbit, darting back to the night outside the window, then leisurely wandered back.
"Why did you take so long?"
Erin was still seated at the table, holding a book in her hands.
