Picking Up a Chief Can Make You Rich

After narrowly escaping death, she woke to find herself in a tattered, drafty house. Women were gathered around her, babbling in some strange language, while a group of half-naked men pointed stone spears at her. Looking at the weapons in their hands… Someone: Did I… did I transmigrate to the Stone Age??? Later on I can learn the language, and I can make what we lack. In short, I’ll lead the tribe to a primitive life of modest prosperity. Hunting, farming, building houses~ Life is wonderful! [One-on-one romance, alternate prehistoric setting, not a beastfolk world]