Dreaming of a romantic encounter akin to a dating sim, a teacher named Nobunaga's world is turned upside down when a 14-year-old girl, Kicho, claims to be his wife. Hailing from the Warring States era, she believes Nobunaga is the historical figure and expresses her desire to bear his children. This whimsical tale follows the unlikely duo in an age-gap love comedy, blending a teacher's modern mindset with a princess's ancient sensibilities.