A gate has appeared in Moscow, Russia on Victory day of the Soviet Union. What came out of the gate was something bizzare and out of place. A Roman army along with dragons and creatures of mythology attacked the people of the Soviet Union. The Red Bear has awoken and it craves the blood of the Sadera Empire. (On Hiatus) (Possible Rewrite) (WARNING: Dark Themes) (I don't own GATE:Thus the JSDF fought there)

As an USEC operator who caught himself in the midst of chaotic events, the attempt to escape from the city of Tarkov for him have failed. However instead of joining crowd of the dead, an incident in the middle of a firefight rescued him from the doomed fate of his inside the hell on earth, yet the cost is pricey. As he found himself in a world called Terra surrounded by unfamiliar people and different situations. But as the Chinese meaning for crisis goes, one represents danger and the other one represents opportunity, so does his journey in the world of Arknights.

Deep in the underhives of Krieg, a mysterious gate appears. But before anyone can act strange men with ancient armor and weapons come out of the gate. Will the 45th Siege Regiment be able to assert the Emperors will in Saderan