Black Wings and the road to world domination

A squad of 5 high classed soldiers and a leader are in pursuit for world domination. An archer who wields 2 crossbows, a samurai with a blazing katana, a battle mage, a skilled assassin and a executioner. These men form a squad called Black Wing's Rose, who will be the main characters throghout the story. 4 exececpt the executioner were forced to join the revolution after tortured into submission. The mad scientist, Gerlimer, a mad scientist is the leader of the Black Wings created a serum that gives humans unimaginable powers such as magic or physical strength that surpasses superhuman. He injects a prototype into the main squad as to test its capabilities before giving them the complete version. Thus they became unstoppable in the rage of war.