Sangoku Rensenki: Otome no Heihou!
三国恋戦記~オトメの兵法!~
A high school girl named Yamada Hana is suddenly transported to an unfamiliar place after being surrounded by a bright light from a mysterious book. In this new world, she meets a young man called Gentoku and becomes a member of his group, living among his army as the disciple of Koumei.