Akashic Records of Bastard Magic Instructor Vol. 13 (manga)

Glenn’s old rival Jatice has kidnapped Rumia, but that abduction is only the first disaster in a rapidly broadening crisis. One of the kingdom’s legendary heroes, Lazare Asteel, has joined the nefarious Researchers of Divine Wisdom, and he’s got Glenn and everyone at the Academy in his sights. If the Researchers get their way this time, it could spell the doom of all Fejite!