Beryl Gardenant lives a quiet life running a dojo in the backwaters, until Allucia, his former student, appears with a new job for him – special instructor to the knights she commands! Beryl accepts the job, but Vice-Commander Henblitz doesn't think he's up to the task and challenges him to a duel.

Former student and top-ranking adventurer Surena enlists Beryl's help to train new adventurers. At the Adventurer's Guild, Beryl ends up in a duel with her to prove he has what it takes for the job. He isn't really happy with the turn of events, but Surena seems to feel differently.