Kyuutei Madoushi, Tsuihou sareru: Munou dato Oidasareta Saikou no Madoushi wa, Buka wo Hikitsurete Boukensha Clan wo Hajimeru You desu

Arnaud, the Court Magician of the Desant Kingdom, known as one of the "Seven Masters," was busy defending his territory, which was overrun with powerful monsters. However, his modest achievements were deemed insufficient to fulfill his duties as one of the Seven Masters, and he was exiled from the kingdom. Forced to leave with his loyal subordinates, Arnaud travels to the neighboring country of Linburu, where he becomes a legendary figure whose name is known by all for his true power!

(Source: Overlap, translated)