Yuusha-kei ni Shosu: Choubatsu Yuusha 90004-tai Keimu Kiroku summary:
A berserker who hasn't stopped fighting for hundreds of years, the worst scammer in history, a political prisoner of fraudsters, a self-proclaimed terrorist of the king, an assassin with a zero success rate, and so on. Their leader, Zyro Forberts, the former paladin leader, meets Teorita, the goddess of the sword, whose existence has been hidden during the war.
The world was entrusted to the villainous and strongest "sinner" heroes. Dark fantasy against despair, opening!