Kamurai
Decent watch, probably won't watch again, and can't recommend.
I'm honestly not a big fan of Debby Ryan, though she definitely can own a role, and I'll even admit she basically carries this movie. Because I'm not a particular fan of her flavor, it may have affected my view of the movie though.
I'm very into her character of a high school ghost, shadowing as an airwaves vigilante though. The weirdness of being a "rebel" though is the company sponsorship angle. It allows for mechanical parts of the story, but feels a little antithetical.
The more interesting angle is the witch hunt for Radio Rebel: it takes some interesting turns, but ultimately lands in the predictable results.
It's a good enough watch, it's just nothing special.