Nobunaga's a high school teacher living in a fantasy world of his own making, convinced his life will suddenly transform into a dating simulator where girls fall for him without effort. His delusion gets a reality check when Kicho, a fourteen-year-old girl from Japan's Warring States period, materializes in his apartment claiming to be his wife. She's convinced he's the legendary warlord Oda Nobunaga and is dead set on bearing his children to secure her clan's future. What follows is pure chaos as Nobunaga tries to navigate the impossible gap between his anime-fueled expectations and an actual person from centuries past who operates on completely different logic. Kicho brings the blunt pragmatism of medieval politics to modern life, while Nobunaga stumbles through interactions that are nowhere near the smooth romantic encounters he dreamed of. Their household becomes a collision between his ridiculous fantasies and her historical earnestness, creating comedy that comes from genuine misunderstanding rather than just cheap laughs. It's a romance that exists only in Nobunaga's head while Kicho pursues an entirely different agenda.