Elf ni Sodatararete Jinrui Yuiitsu no Seirijutsushi ni Narimashita ~Seken Shirazu no Saikyou Boukensha, Mujikaku na Mama Ningen Shakai de Musou Suru~

Raised by elves, the spirit mage Lute travels the world alongside a Great Spirit! For Lute, exploring the world has always been his greatest dream. But elves are considered nothing more than a myth in human society, and the spirit arts he inherited from them only bring him trouble. He soon finds himself entangled with nobles seeking connections to the elves, while others set their sights on Mai’s beauty and her potential as a Great Spirit vessel... Yet no matter the odds, Lute blows everything away with overwhelming spirit magic. The reign of the clueless, oblivious champion begins now—!

https://www.manga-up.com/titles/1678