Black Eagle’s Saint~ The Expelled Healer Masters Dark Magic from His Spare Magic Powers, 黒鳶の聖者 〜追放された回復術士は、有り余る魔力で闇魔法を極める〜

In the selection ceremony where the Goddess bestows people their classes, Russell was given the class called [Saint], a high-tier class, and formed a party with his childhood friends whose classes are [Hero], [Holy Knight], and [Sage]. However, due to his class is not compatible with the party, Russell was eventually expelled. As he disappointingly goes back to his hometown, Russell found a beautiful woman being attacked by a monster and decided to help. To Russell, this fateful encounter brings him—- [Do you believe in the Goddess?] An invitation to a cult.