The Lord-Magear's Apprentice

Gull, a mercenary boy whose life was saved by the highly ranked magician Kuon when he was young, now accepts a job to serve with a group of knights to subjugate a magician and retrieve a stolen magear. However, as the knights are on the way they are discovered by the magician and a battle ensues. Faced with an opponent with overwhelming power, Gull is...!! After that, Gull somehow becomes Kuon's apprentice...!?