Zeno, the demon realm, evolves its technology through magic. Magic can be used to call someone from long distances, broadcast news, preserve food, and more.

Zeno's current civilization doesn't accept any products of innovation. One's inventions can only be used personally. One can't sell it unless it doesn't threaten employment rates.

From cell towers, to broadcast gems, and so forth, mages are the ones in charge of it. With the use of magic, one can decode texts, copy keys, and heat the hot springs.

In this realm, magic is a form of currency, a requirement for survival. If one has a low aptitude, one will struggle in the lower class. But it's unfair that one's fate has already been decided since birth.

But there are those whose talents are undiscovered. From generation to generation, people from the slums have been stereotyped as weak and having low magical aptitude.

They are still claimed weak even if they are not able to determine their magic aptitude. There are those who bypas