Galaxy Devastator

 The Galaxy Devastator.

  The story took place in the early days of the Sirius War. Newcomers on the battlefield fight bravely. Proving their value as a new generation of super-warriors on the front lines. However, when they followed their superiors, they were attacked by the Black Army, and the chiefs died. The battlefield fell and was forced to retreat. Comrades in the previous battle were just ordinary humans. They think that they died in the attack of the black army, but it turns out he survived.