A Returner’s Magic Should Be Special Wiki

Shadow Worlds were a kind of parallel worlds and the most dangerous phenomenon mankind has ever seen that occur each year. Like an infinitely long corridor with countless rooms on each side; there are countless worlds, each with their own bizarre set of rules.

Without a doubt, however, the most dangerous characteristic of a Shadow World is its potential for an ‘Encroachment’ event to occur. Encroached land is smothered in a thick, black fog, and it becomes impossible to know what’s happening inside. Only one thing is certain: no living being has ever entered encroached land and returned alive. It is simply a place where life cannot exist.

Origin of the Shadow Worlds

Shadow Worlds are created by the Artemis System when it recreates the past and turns it into the correct history for the prosperity of all intelligent life. However, the system became the very thing that threatened the world.

Clearing the Shadow Worlds

‘Clearing’ the Shadow World prevents it from encroaching upon our reality. If the event of a given Shadow World is based off of a past war in our world—the ‘background’—and the victory of that war consisted in demoralizing the enemy, then the ‘clearing’ would involve defeating the enemy in the exact same manner—this would be the Shadow World’s ‘objective.’ Every Shadow World has its own background and objective, and completing that objective ‘clears’ the Shadow World.


The goal, then, is to clear all the Shadow Worlds that appear. And the two rival organizations, Western Kingdoms and Hebrion Academy, stand at the forefront of this movement.

Shadow Worlds didn’t disappear until they were cleared. As time went on, the existing Shadow Worlds would continue to pollute and encroach on their territory. With the thousands of Shadow Worlds available, they were split between Hebrion Academy and the Western Kingdoms. The most difficult instances were given to Hebrion Academy graduate students, whilst the actively enrolled students would often find themselves in low class Shadow Worlds to build experience.


According to the rules of Hebrion Empire, any group that can successfully clear a Class 3 Shadow World will recognised for their strength and organisational power, and will be given the same power as Knights.[1]

Any party that established such a merit at Hebrion Academy will be able to act without going through the Academy, which meant that it had the right to act alone.[1]

Accessing the Shadow Worlds

A long time ago, Shadow Worlds could only be accessed via Teleportation Gate exactly where the Shadow World spawned. With the technological advancements over the past 30 years, expeditionary members are now able to enter the Shadow World from anywhere using Fifth Circle Space Manipulation magic. In order to participate, all an expeditionary member have to do is select his preferred Shadow World and enter the gate.


If someone were to meet their end in a Shadow World, their corpse would become a part of the world. Once the Shadow World was cleared, it would disappear along with the world.

Classes of the Shadow Worlds

The Shadow Worlds are divided into 10 levels, and depending on the ranking, the number of deaths in a Shadow World can be estimated.

Level Description Known Shadow Worlds Notes Ref.
Class 1 The strongest and most dangerous Shadow Worlds.
Class 2
  • Until the Year 3616, there were no reported incidents of Class 2 or higher Shadow Worlds.
Class 3 Class 3, for all intents and purposes, was the highest difficulty Shadow World.
  • North Sea
  • No individual is allowed to clear worlds of this class and above.
  • Any party who successfully clear a world of this class will be knighted.
Class 4
Class 5 From this class and above, those who entered the Shadow Worlds will be exposed to war and murder. Death is a very real possibility.
  • For a 1st year Single Ranker, it’s normal to enter a Class 5 Shadow World.
  • Beta Class students are not allowed to enter Class 5 Shadow World or higher.
Class 6 This class and below Shadow Worlds are fairly easy that just about anybody can clear them.
Class 7
  • Beta Class members mainly participate in clearing this level of Shadow World.
Class 8
Class 9
Class 10 The weakest and least dangerous Shadow Worlds. Ernste Plains Race


Links and References

  1. 1.0 1.1 Chapter 126
  2. Chapter 125