C98 Corpse Soul

The Underworld Ghost Army, the Glorious Sun Empire's most enigmatic military force, was so fearsome that its true visage remained unseen; those who had glimpsed it were no longer among the living. Thus, it was also dubbed the Army of Death, its arrival heralding the presence of the Grim Reaper himself.

Since its inception, the Underworld Ghost Army had been mobilized a mere two times