The story is set in a world where humanity, driven off the land by the threat of magical armored insects, now live in aerial floating cities. Thus wizards—aerial combat mages who fight the insects with magical powers—came into being. Kanata Age is a young man who lives on the floating wizard academy city of "Misutogan." He was once celebrated as the "Black Master Swordsman," the elite ace of the S128 special team. However, he is now despised as the "traitor of the special team." One day, he is assigned as the instructor of E601, a team that has suffered 10 consecutive defeats. E601 has three girls—Misora Whitale, Lecty Eisenach, and Rico Flamel—with one or two peculiar quirks. (Source: Anime News Network)

A gaming hobbyist in-between jobs spent his free time playing his favorite online game. After enjoying the last day of service with his friends he awoke in an area that hadn’t existed in the game. Then he met a lone woman. It turns out his appearance had been overtaken by that of his character. In this world, he uses his newfound power to enjoy complete freedom.