Wizard, His Spells Can Be Advanced!

The wizarding world, cruel reality. Wizards seek greater witchcraft and pursue the most arcane knowledge. The apprentices form cliques and try to unite to find a way to advance to wizard level. And a certain guy is always hiding quietly in the corner, clicking on the proficiency panel in front of him. "I just want to increase my proficiency." "The proficiency level is full, and the witchcraft is about to be advanced again!" "What? The level has reached the upper limit!" … "The panel determines the level limit?" "Joke, knowledge is." "The so-called witchcraft is just a preparatory dish of knowledge." … "Is this what you researched?" "Ignorant guy, let me tell you, give me a fulcrum, and I can move the earth... The Kingdom of the Mist Forest!" … Of course, that's before the story begins with the great wizard of truth, Coen Adams, waging a dimensional war in Noble Heights. He was still just a slave.