Book Basic Plot

The plot is this: Humans control the world and treat monsters like lesser beings. While at the moment they are just that, the leaders plan to have full control and be able to constantly kill monsters for sport, which doesn't matter to them, as they can be respawned over and over (I was inspired by how in video games players go after bosses just for fun and they can kill non-boss enemies over and over again and just wait awhile and then they respawn). But, certain monsters, as well as certain humans, are against this system, and they want to stop them. The only way to do this is to stop the people at the top, as they are the ones causing all of the trouble. There are a lot more details, but I don't want to give too much away.