Berserk of Gluttony 4 (light novel)

Blessed with new power after his trials in Galia, Fate returns to Seifort. He intends to wield his influence to uplift the downtrodden—those forsaken by the world for their “unnecessary” skills. But standing in his way are his cruel old employers, the powerful Vlerick family. Now, in order to save the soul of Seifort, Fate must expose the terrifying truth hidden within the Vlerick estate.