The premise is a gimmick, but the comedy isn't. Four girls who shouldn't exist in the same school become genuinely funny because the show understands each of them completely, their timing, their vulnerabilities, the specific shape of how they lie. It's the kind of comedy where you laugh at the absurdity and then immediately laugh again because you recognize something true about the character beneath it. The ending collapses under its own weight, but by then these four have already won you over in ways the plot never needed to.

Rikka, Chiyo, Sekine and Tsubasa are close friends in their second year of middle school at Kashihara Girls' Academy. Each is hiding something enormous: one is an alien pilot, one is a ninja who has left her clan, one has weak telepathic powers, and one is a boy passing as a girl. None of them knows what the others are concealing, and their lies are part of what keeps the group together. Keeping up the act takes plenty of improvisation, which drags them into one comic mess after another, while their classroom, and the Earth along with it, faces the threat of destruction. The show mixes school comedy and slice of life with science fiction and supernatural elements.