Arknights- Neos

GHOSTS, Designated as the Group for Specialized Tactics, they stand at the tip of the spear of the US Army's unconventional warfare response forces. Highly specialized and incredibly skilled Special Forces soldiers, they are called Ghosts. They are the first unit deployed into dangerous situations and the last ones to leave when things get rough. And if they do their job right, no one will ever know they were there.

Over the years, the group's focus turned against the unknown and the supernatural, rather than terrorists and the corrupt. Things had turned grim as humanity's ambition surpassed humanity itself, and the situation proved that the Ghosts are on the point of their limits.

First Lieutenant David "Fox" Gordon ends up in a place he is unfamiliar with.

With no memory of the recent events and only the experience he has from his military career, how would he comprehend the next events that lies ahead?