High schooler Yoshiharu Sagara wakes up flung into Japan's Sengoku era, where most of the age's legendary warlords have been reborn as young women. Taking the place of Kinoshita Tokichiro, a retainer who dies saving him, he's pulled into the service of the rising warlord Oda Nobuna as she fights to unify the war-torn province of Owari. Yoshiharu's memory of how history was supposed to unfold becomes the only edge he has in a timeline that no longer matches the one he knew.