Another of New York Times Bestselling Minecraft author, Mark Cheverton's series of short stories.
Watcher, one of the most insignificant NPCs in their community (according to the warriors), feels like an outcast. He stands alone at the top of the watchtower, gazing out into the landscape, searching for monsters. The problem is, he gets bored and instead of watching, he day-dreams. He's seen armies of zombies, only to find they are a handful of pigs, or imagining chickens to be skeletons. No one trusts what he says, making Watcher feel even more alone. But one day, this all changes when he sees Karkan, the King of the Withers near their fortified walls. Of course, no one believes Watcher when he reports the monster's presence. Rather than be mocked and bullied, the young villager goes out into the wild to find Karkan and prove he exists. But what Watcher finds, will terrify him and likely forever alter his life, this is if he can survive long enough to help save his village from total destruction.
Very nice book