Book 4: Chapter 2
Within the forest, there was little food to eat, and also monsters which attacked us occasionally.
The Hungry Dogs which attacked in flocks, and Killer Worms which crept up on us while sleeping. These kinds of monsters can also be found in the “Front World”.
The gravity, the surrounding vegetation, the arrangement of the stars – everything was the same.
If so, it is better to think that this is the “Back World” where the “mediator” whom I fought previously in the Kruvan Holy Kingdom came from. [1. TL Note: The “Other World” from previous volumes will be referred to as “Back World” from now on. Reiji’s world will be referred to as “Front World”.]
I told Asha about the information I had on this world.
——It seems that the 8-star skill orb must be necessarily dedicated to a person of the Holy Royal Family who has never received a skill orb. I don’t know why it must be dedicated to them, but according to the old documents, it seems that the skill orb appears about once every 100 to 300 years. Those of the Holy Royal Family who were given the skill orb have always disappeared without exception. It is believed that they departed to the “Back World.”
I heard this from Earl Sillys.
A few hundreds years ago, someone from the Holy Royal Family departed to this world.
——It is simply called the “Back World” by the people of this world. Eh, it is said that the “Back World” is the exact same world as ours, which lies on the back side of this world. The “Covenant” seems to be a rule regarding “skill orbs” that was agreed with the “Back World”.