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
hmm one punch man, from the anime already shown us how Sonic as a ninja get easily defeated by saitama. Since the peak power in Naruto as an Otsutsuki cant one punch a planet , in fact none of the otsutsuki can . Hence the power scaling might be painful. At most the mc can help saitama slap Tatsumaki as she is too full of herself. but still it can be entertaining to read just dont fight saitama. Any summoning beast be it Gamabunta or Manda are really weak against most monster found in Onepunch universe.