Military otaku high school student Nagato Kazuya is granted the ability to summon modern weapons and soldiers, and is transported to another world.

Together with his summoned yandere adjutant and soldiers, he utilizes modern weapons to rampage freely across the land, sea, and air of the other world.

The story features combat, overpowered action, a yandere harem, and intense dramatic situations.

※Note: This work is also posted on Hameln.