revolves around a bunch of kids, but there's also a bunch of gruesome deaths, racism (some american kids call the main ones "rice for brains") and one of the kids called the other a "fucking pig"

like the tone is really hard to pin down

A hard to pin down tone is pretty standard for Gamera admittedly

like Gamera has always been "The protector of children" but surrounded by typical Kaiju gore

Not sure what the racism is about though. Edginess?

trying to make the american kids look like assholes. he's apparently one of the main group going by the OP so idk