The Demon King's First General - Chapter 10: Please Train Harder

... lived in this place; it was a whole different world inside Exgreia. And the entry from this was forbidden.

Spirits could go out whenever they wanted and return as they pleased, but different beings weren't allowed to step into this realm.

There were instances where a few human beings entered the Realm of Illusions without realizing it. Sometimes, they were lost in the sea due to the bad weather conditions, and they would soon wake up in the world of spirits, but Calix, the Spiri ...