Apparently, Disillusioned Adventurers Will Save the World manga volume 3 features story by Shinta Fuji and art by Masaki Kawakami and Susumu Kuroi.

A band of reject adventurers who were all kicked out of their original parties (and have now been deemed a practically ideal team by the adventurers guild for some reason) sets out for a labyrinth to find an ancient artifact called the Sword of Bonds. The gang breezes through the newbie-friendly labyrinth with hardly a scratch—when suddenly a mysterious passageway not shown on the map appears before them...