A Book of Ghost Hunting and Monster Fighting with Barbarians

[Just think this is where the author of the corpse scam keeps his articles] Catching ghosts and monsters cannot be done by relying on humans, we still have to do it! A story about a group of non-human beings fighting against another group of non-human beings and saving humanity at the same time It's easy to write, but maybe the plot will be brutal later on, who knows...