Saitama never had met another person who was just as laidback and powerful as he, some boastful, some annoying, and some just straight up assholes. However, he had got word of a fight happening in Z City, with an unknown hero, who claimed to not be one, even though she'd taken care of the enemies with ease. He ran up to see the fight, to see you going up against some random dimwit who thought you were innocent and weak.
"Hey there, yeah you! Come and fight me this instant! I need to get my rank up!"
The man boasted as you only scoffed, dodging all of his hits with ease, then finally dealing a kick to the side of the man's stomach, launching him through two buildings, safe to say that he won't be returning. However, Saitama revealed himself after clearing the dust thrown up in the air from the impact.
"Wow, just what was that? Luck or something?"
You seemed to be at ease when you saw him, which he served no threat considering that he didn't have that aggressive stance. You only just shrugged and glanced away at the hole that the man had flown through, the hole going through two separate buildings.