Radiant

After he parts ways with Alma, Seth crosses paths with the Baron Merchants on his way to Caislean Merlin. The Merchants, who made a lot of money selling weapons to the Inquisition, had seen their earnings diminish with its fall from grace and are looking for a mysterious new income source.

Radiant is a French fantasy manga and anime series following Seth, an impulsive young sorcerer seeking the "Radiant," a mythical nest of monsters called Nemeses that plague humanity. Infected by a Nemesis but surviving, Seth wields "Fantasia" magic, aiming to destroy the creatures and bring peace, while avoiding the Inquisition, which hunts sorcerers.