Apparently, Disillusioned Adventurers Will Save the World, Vol 1 (light novel) (häftad, eng)

Nick used to be a member of a veteran adventurer party, helping his undisciplined
friends with the accounts whenever he could. But what was his reward? Getting
accused of embezzlement and kicked out by the leader he respected. Before long, he
finds a few other jaded adventurers and kindred spirits, and together, they form their
own unstoppable party!