A-Ko and B-Ko's arranged marriage chaos collides with an alien invasion, and the show doesn't blink, it just cranks up the absurdity until both plot threads become equally ridiculous. The animation gets noticeably sharper here, which means the sight gags and superhuman kung-fu slaps land with real weight. Kei stays completely useless throughout, which is exactly the joke, and Mari's backhand carries more comedic timing than most shows' entire scripts. It doesn't stick the landing on wrapping up the series, but it doesn't matter because you're too busy laughing at how hard it commits to pure, zany comedy spectacle.
Ancient prophecies of an incoming superior race surface when archaeologists unearth mysterious relics in Iraq, but back in Graviton City, nobody's paying attention to the apocalyptic warnings. A-Ko and B-Ko are too busy fighting over Kei to notice anything else. When their principal arranges a marriage between Kei and the composed Miss Ayumi, both girls reach peak desperation. They'll sabotage, scheme, and throw down however necessary to wreck these wedding plans. Their chaos reaches a fever pitch just as an alien armada emerges from space, heading straight for Earth. The girls suddenly find themselves caught between their petty romantic war and an actual extraterrestrial threat. A-Ko's superhuman strength and B-Ko's mecha suit make them Earth's unlikely last defense, whether they're ready or not. The finale tosses together everything the series promised: ridiculous love triangle drama colliding head-on with sci-fi spectacle, all wrapped in comedic mayhem. It's pure 80s energy compressed into a single, unhinged finale that refuses to take itself seriously while the world burns around them.