I don’t mind school kids fighting demons inside the TV. But a schoolkid detective helping the police is a bit too much for me. Although that’s as a staple as a TV idol coming to a small town and falling for the protagonist. Detective Conan and all that. Although people tend to forget that Detective Conan was an adult trapped in kid’s body.
But I must admit, the plot twist that Naoto is actually a girl dressing like a boy because otherwise people wouldn’t take her seriously is a good one. And they even managed to tell that story convincingly, instead of going for “you just need gender surgery!”