Apparently, Disillusioned Adventurers Will Save the World, Vol. 2 (light novel)

Betrayed and kicked out of his adventurer party, Nick thought he might never trust another again. However, it isn''t long before he finds new comrades with similar experiences: Tiana, a mage and former noble lady, Zem, an excommunicated priest, and Karan, a female dragonian warrior. Together, they form an adventurer party called --Survivors-- and are later joined by the Sword of Bonds. But just as things start picking up for them, Nick runs into his ex, Claudine, and they get dragged into a duel with her adventurer party. Can the newly formed Survivors win against a group active in the underworld?