One Punch man x Male! Reader

Prologue

I saw a guy with black hair walk by so I started to follow him he then notices me "what?" he ask "nothing I just wanted to follow..." I said he sighed then looked at me "don't you have a home already?" he asked I shook my head 'no' he sighed "Saitama...is my name" Saitama says I smiled "M/n is mine! nice to meet you Saitama-san" I said cheerfully he blushed and said 'you to' we continue to walk until this crab guy?? walked up to us and said some stuff about me being a brother while Saitama being a business man but Saitama didn't get the job I place my hand oh his shoulder and said better luck next time and gave him a closed-eye smile he blushed while the crab guy talked about a kid with a big chin drew nipples on him then he walked away while we continue to walk we both notice the boy with the big chin I gasp and tapped Saitama's Shoulder and pointed his eye widen then that crab guy earlier came and attack him but I moved him to the side while Saitama fights the Crab guy Once he won against the crab I ran and gave him a hug "THAT WAS AMAZING SAITAMA-SAN!!" I said/yelled Cheerfully he blushed but smile and said 'thank you' we continue to walk until we got to the apartment so since that day on....Me and Saitama have been living together

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May I just say that the prologue you knew Saitama in the past so that's why the Prologue is about the past....Again hoped you Enjoy~ You also know about the power he got you also will have a power too it is fire~~!! Like you will have the tips of you're hair red and fire wings come out when you fight! not just that you can summon fire animals and monsters so yeah gave that away spoilers sorry!!!! T-T but again hoped you enjoy and see you in the next chapter and goodbye~~