Saitou in the first season when he one shots the golem that multiple mages couldn't defeat and he does it using the "Staff Of Destruction", which is actually an M72 LAW rocket launcher, a.k.a. Light Antitank Weapon. Fouquet tries to use it against the party after the golem's destruction, not realizing that the aforementioned "weapon" was a single-use rocket launcher, predictably fails to use it and Saito rushes at her with the hilt of his sword to her stomach, knocking her out cold.
Saito using the Zerosen to single-handedly wipe out Reconquista's entire dragon army.
Saitou goes alone against up against an army of 70,000 bloodthirsty, berserk soldiers, held them off for four Goddamn hours by himself.'' On top of that, he didn't kill a single enemy, only knocked them unconscious.
Colbert deserves one in season 2, episode 9, when the unassuming and goofy professor finally reveals his credentials as a Retired Badass, complete with a reputation as The Dreaded and being able to casually pull an Offhand Backhand with BLUE flames, both in flashback and in the present day. It is also shown that the unassuming and goofy professor is ripped as they come, befitting of a former soldier.
Just over two years after author Noboru Yamaguchi's passing, it was announced that, after years in limbo, the series will finally see its long-awaited completion. That's right, Yamaguchi is finishing the series from beyond the grave. Granted, he's getting help from still-living editors, but still!
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