Kurono Crawford, a young noble of the Cepheus Empire, harbors a secret: he was transported from modern Japan to this fantasy world. Lacking any supernatural cheat ability, he relies solely on the knowledge and values of his previous life. After being abandoned by his superiors, he is placed in command of the empire's rejects, a motley force of demi-humans including minotaurs, dwarves, and elves, and saddled with the governance of an impoverished fiefdom. Undeterred, Kurono sets out to rebuild his territory, modernize his army, and carve a path to power. His unorthodox strategies and modern sensibilities quickly attract a growing circle of capable and beautiful women, including the cool archer Leila, the naive princess Tilia, the mature tavern owner Shela, and the spirited former slave Elena. Their relationships form the core of his personal and political ambitions. The story traces Kurono's rise through military campaigns, political intrigue, and land management, as he clashes with rival nobles, suppresses bandit gangs, and navigates the capital's treacherous court. Notable arcs include his induction into the peerage, a military exercise that turns into a real battle, a visit to the imperial capital that uncovers a conspiracy leading to a usurpation, and a campaign to the southern borderlands. Throughout, Kurono balances the pressures of leadership with his pursuit of a personal harem, using his otherworldly knowledge to achieve victories both on the battlefield and in the bedroom.