Why Is My Waiter Different?

In this world, everyone can become a "magician". Of course, they are different from the magicians who rub fireballs in the science fiction world. They have their own magic circuit, at least one. This is the qualification to become a "magician". The protagonist of this world is not the magician but their waiter. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.