Yoshiharu Sagara finds himself in an alternate timeline in the Sengoku era, where some of the well-known warlords are female. Because of him, Hideyoshi Toyotomi dies, but he saves the life of a female version of Nobunaga Oda, named Nobuna Oda. As a reward, Nobuna makes Yoshiharu her retainer. But his claims of coming from the future brands him as crazy. Meanwhile, the lord of Mino, Dösan Saitö, calls for a negotiation with Nobuna...