I, the Urban Legend Creator!(2023)

When Cedric Reid finds himself in a parallel universe full of malevolent beings and comes into possession of a mystical notebook that has the power to turn whatever is written in it into reality, he decides to use it to punish the bad and absorb the powers of other supernatural entities. He later joins an elite group of special agents on a continuing mission to rid the world of evil.

(Source: WebComics)