Magic manual that he cannot read, imparts the knowledge of skinning animals (never mind that properly skinning an animal is incredibly difficult and easy to mess up), making snow shoes, organ removal(It's not easy god damn, why does the manga make it look so easy), where'd he get rope, string, fibers? (The materials from the boat can only last so long).
I mean come on the boy is retarded, he keeps getting caught off guard by rats, yet based on a book he cannot read, he is already curing hides, butchering corpses, skinning, preparing dried meats, and carefully removing organs after only a couple months.
Tribes used to spend years teaching kids how to skin and prepare different animals, but not this kid, he doesn't need a teacher he just needs his magic book in another language.
