Travel to the Primitive Tribe and Become the King

A social creature who accomplished nothing accidentally traveled to primitive society and became the most mysterious wizard in the tribe. There's nothing wrong with being a wizard, it's just being a village chief! But can anyone tell me why the human species here are completely different? Those with cat ears on their heads, those with wings on their backs, and those with long snake tails. Why are the people in the tribe so magical? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.