Injuu no Gouhou

1945---Europe. It is the end of World War II. Major Dirk Bernstein, a member of the German SS Intelligence Service, is growing more and more frustrated with the growing sense of defeat. At the same time, however, he was secretly gloating about the fact that he had a secret plan to reverse this situation.

If he achieved success in the war, there was no doubt that his position within the SS would improve and his influence would expand. In addition, he would eventually seize full control of Germany, but this plan failed in an unexpected way. During the final experimental stage of the device's near completion, it went haywire, causing unexplainable phenomena.
The team, led by the Major, found themselves in an unfamiliar mountainous area with the entire research facility. The words of one of the researchers, who could be described as a one-armed man, were unbelievable.

As a result of an immediate investigation of the surrounding area, they found a world where strange creatures roamed about like in a fairy tale, magical technology existed, and humans strode about in medieval-style armor and helmets.

[Translated from the official site]