Ninja Useless? Look at My Susanata Buddha.

Lin Fan traveled to a world where everyone changed jobs. The skills of each profession here are not innate, but must be developed from generation to generation. Skills are the most valuable strategic resources in the world. Although Lin Fan changed his job and became a hidden professional ninja, only a small part of the skills of this profession have been developed so far, and they are all monopolized by the Neon Kingdom, making it impossible for outsiders to learn from them. Just when Lin Fan was confused, Uchiha Madara's template was successfully loaded. Lin Fan was shocked when he saw Banye's extremely huge skill tree next to Neon Kingdom's short skill tree. Sharingan, fire escape, taijutsu, Uchiha rebound... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.