One Punch Man: First Hero

This is the story of an otaku who one day woke up as the One Punch Man, Saitama. But how is he gonna live now that he's in a different world, filled with heroes and monsters. He's just an otaku !!! One thing is sure, this world will change now that a calm and cold man replaced the best hero. *********** Warning: This story start a few months before canon. Some characters will be OOC. This is an altered version of One Punch Man where Blast isn't a hero of the association and the Monster association hasn't been created yet. I will write a chapter per day, but this may change as i will write more the more votes and reviews there are. I will be posting this story on RoyalRoad Patreon: https://www.patreon.com/Glasgow