Mechanics fix things.
The warriors broke them.
Those are the two facts Perry experienced on Earth. When he was transformed into a different world and transformed into a young nobleman with new magical powers, he found himself faced with a difficult choice. Either try to survive on the front lines, the mysterious battlefields where hydras and demons roam free... Or find another path.
So he made a vow. This oath made him a magician. Magic lord. At least for now he has escaped his fate.
