At first, climbing the stairs wasn't too crowded, but in the last ten levels, the number of "companions" increased significantly.
Because it was so crowded, Angel passively learned a cold fact—the total length of the outer corridor on each level.
Since there is more than one staircase on each level of the Ring Fort, if there's too many people on this staircase, I'd switch to another one. In the process of detouring and searching for new stairs, Angel passively came to know the length of the outer corridor on each level: roughly three to five kilometers.
The outer corridor is already so long, and there are countless rooms and shops along it, many of which contain hidden worlds, making the effective area even larger.
And this is just one level.
The currently known main station of the Ring Fort has a total of seven thousand levels.
