A university student living in Japan has a train accident while returning home and is reincarnated in a different world. The place he is reborn is as a prince of a small country located in the mountainous regions, and to make matters worse, he is the youngest of seven siblings! Furthermore, in this world, two powerful countries boasting the highest level of technology in each of their respective paths, fight for the hegemony of the continent, while small countries engage in a state of constant warfare, each trying to seize the other’s territory without attracting the attention of the two major powers. Will the protagonist, the youngest prince named “Milimos Nonette”, be able to survive and achieve success?