Waga Deshi ga Motto mo Tsuyokute Kawaii node Aru

"It has been too long since I reached the so-called peak of magic art"
"I get my answers before even doing anything... And such a life is boring"
"So i got an apprentice for myself."

The manga is from the perspective of Arietta (Arietta Pelcia) the apprentice, bought form slavery by an incredible, yet bored magician (Theo Elvram).