In the vast and untamed lands of Arabou Continent, a world distinct from modern Japan, war is a way of life. Among the many mercenaries who roam the battlefield, the skilled fox-girl Foxy commands her trusted 74式戦車S改II (Type 74 Tank S Modified II) as the leader of the infamous tank mercenary unit, Nanayon Company. Despite their prowess, life as a hired gun is anything but glamorous—endless battles, meager profits, and constant financial struggles keep them trapped in a cycle of survival. But one fateful day, everything changes. During an escort mission for a merchant caravan, Foxy rescues a mysterious young girl from human traffickers. Could this girl hold the key to escaping Foxys life of poverty and hardship? Or will she bring even greater turmoil to the battlefield? A high-speed, high-caliber military fantasy adventure begins!