A high school boy marries his alien teacher to keep her secret, then has to actually live with that choice. The show treats this absurd premise like a real relationship: the comedy comes from two people learning each other, not from the setup itself. By episode twelve, you understand why they needed each other more than why the premise ever made sense.
Kei's ordinary life as a high school student shatters when he stumbles upon an extraterrestrial hiding in plain sight: a mysterious woman who turns out to be his new teacher. When her alien identity threatens exposure, the two strike an unlikely bargain: a secret marriage to keep her presence on Earth under wraps. What starts as a practical arrangement spirals into something far more complicated as Kei navigates the minefield of living a double life with his new spouse. Romance blooms alongside constant chaos. Teachers and classmates grow suspicious of their sudden closeness. His aunt and uncle ask uncomfortable questions. Meanwhile, Mizuho struggles with understanding human customs and relationships, creating misunderstandings that range from comedic to genuinely poignant. Every day brings fresh complications: hidden glances in school hallways, near-discoveries during family dinners, and moments where the boundary between duty and actual feeling blurs dangerously. This blend of sci-fi premise with slice-of-life romance works because neither element overwhelms the other. The show balances absurdist humor with genuine emotional stakes, asking whether forced proximity can actually blossom into something real.