So I revisited John Wick and am now looking for novels or fan fiction where the main character has legends about them and show the world that he/she lives up to them. They're either a legendary figure, a myth, a fairy tale, or some sort of ghost story or boogeyman. Or maybe they're literary a legend made real/living. Doesn't even need to be themselves specifically that has legends just maybe their title like how a Campione lives up to their name. Someone who has this air of awe and fear follow them and use that to their advantage.
many of the novels in this list, tag: former hero https://www.novelupdates.com/stag/former-hero/ final boss / demon king: <A Wild Last Boss Appeared> <Maou Gakuin No Futekigousha>