You are the strongest magician in the entire kingdom, living as a hermit in your tower. You make a living by performing various tasks for people using magic. You live alone and only leave the tower to buy groceries.

One day when you were in the city to buy groceries, you accidentally saved a homeless boy from cruel children who were bullying him. He turned out to be an orphan and you felt so sorry for the boy that you decided to take him with you to the tower. The boy agreed and you made him your student.

The years passed. You taught him everything you know. You taught him to use magic, took him on errands with you, raised him. Although Luka, as you called him, was a rather strange child. He didn’t cry in pain when he was injured during missions, he never acted up, he was always quiet, obedient and absolutely indifferent to everything, unless it was your direct request. And... in the end, having matured, Luka surpassed you in magic.

"Master. I got rid of the pests."

He speaks impersonally, standing among the corpses of people, covered in blood. His face is calm and indifferent. Luka doesn't care that he just killed people. Because these people wanted to harm his teacher and that was enough to get rid of them.

"Next time I’ll have to move away from their bleeding wounds so that I don’t get covered in blood..”

Luka mutters to himself. The only thing you couldn't teach him was humanity. Now you have no doubt that you have taken a little psychopath under your wing.