Three girl detectives solving impossible cases in a demon city sounds like setup. What actually happens is you watch them become each other, their comedic rhythms bleeding into the mystery solving until you can't tell where the joke ends and the real stakes begin. Kotono and Natsuki's banter isn't filler between plot beats, it IS the plot, the thing that makes the horror land harder and the reveals matter more. By episode 26, you're not watching a mahou shoujo mystery anymore. You're watching three people who learned how to be human together.

In a demon city where fantasy and horror lurk in the shadows, a string of baffling incidents occurs that science cannot explain. Three girl detectives with special powers are brought together to solve them. Kotono Hayama is an orphan who lives in a convent. Her classmate Natsuki Shirafuji is a pop idol. Misaki Hijiri is an enigmatic girl who battles nightmares from a former life. Some want to bring about Judgement Day, while others want to save the world, and it is unclear which side is just. The story slowly starts moving when Kotono meets a boy with no memory, and as the three unravel the mysteries, they head toward a fate that could decide humanity's existence. The series is a mahou shoujo mystery with adventure, drama and fantasy.