Myriad Spirit Summoner

A modern youth who gets transported to another world after a bad online shopping experience finds himself in the body of an outer sect disciple with a low-grade fire spirit root, constantly bullied. He unexpectedly obtains the inheritance of an ancient summoner that is hunted by the entire continent. While disguising himself as a useless fire cultivator to develop in secret, he also settles the original owner's grudges, ultimately exposing the thousand-year lie of the sect and rebuilding the summoner lineage. — Description from novelcodex.org