Safety-Always-Comes-First

Humans cannot use Magic.

When a Mage waves a wooden wand with a mysterious incantation, Magic goes poof! and appears, so people who don't know any better like Pastel might be mistaken and revere Mages, but Magic is not the Mage's own power.

A Mage is closer to a prayer practitioner reciting an incantation. Magic is merely all things in nature hearing the prayer and granting it on the Mage's behalf.

It wasn't much different from the self-proclaimed Fairy, the artificial spirit, crying God! God! and doing wish subcontracting, including how it boasts when the results turn out well.

However, unlike the embarrassing situation of a Mage when he was picked apart, the story was different for a priest.

The chosen priest class, which became able to wield mysteries because God personally shared divine power with it, literally wielded divine power.

With a single hand gesture, incurable diseases were cured and monsoon rains fell on dry earth. The individuals became able to perform miracles at any time, parting the clouds and making the sunlight shine down from above.

To the point where it was so excessive that they mistook themselves for gods.

Worship and corruption.

Those who came to completely possess the divine power of a naive personal god after painstaking schemes and betrayals are called Demons...