Instructor of the Air Combat Mage Candidate

The world is threatened by "magic armored insects" and the earth has been occupied by them. Human beings can now only live in floating cities in the sky. Aerial combat mages were born among humans, magicians who used magic to fight against "magic armored insects". Kanata Eiji, who is studying in the aerial combat magician training institution - the floating academy city "Mistergan", is the elite ace of the S128 special agent team who is dubbed the "Black Sword Master". However, now he is regarded as the "traitor of the special agent team" and is despised and disgusted by everyone... One day, Kanata is appointed as the instructor of the E601 team, which has been losing consecutive battles. This team takes in three girls with unique personalities——? The heroic attack launched by traitors and problem student girls starts now