(One Punch Man OST - Comical Dance)

He didn't like dealing with other people's problems.

Well, maybe that wasn't the right way to describe it. What would describe his feelings best would be that he just disliked going out of his way. He wasn't a particularly busy man, but he did like to keep to his own and not bother with things like maintaining relationships with friends or family. Not a sad story actually, the attitude just came with having no neighbors. At his age, making friends was more difficult and he hadn't felt a need to contact family in a long time. He never really associated with others too much more from what had been necessary as a retail clerk and as a construction worker, he spent more of his time actually doing his job. Though plenty would think that being a hero required interacting with people, for him, it didn't really matter. All that mattered at the end of the day to him was the paycheck.

Now, he wasn't antisocial but he didn't go out of his way to stick his nose into other people's business. Maybe that wasn't how things went for others. Actually, that probably was the case as it seemed that others had definitely put the time and effort to drag him into theirs. He wasn't sure where he made the wrong step. Genos had clung to him all on his own and with that, started a whole slew of things he really couldn't care less about. If it wasn't gonna offer him a good fight, then he was better off not wasting his time.

Saitama didn't like dealing with other people's problems, so he often left them alone. However, he concluded that by doing so, he wouldn't ever have to. That thought began to change as he sat down at his small table, the sight before him easily making him question why he didn't just tell Genos to stay home and continue their daily routine as usual. He wasn't the type to avoid trouble whenever he found it, but he wasn't stupid enough to just run head-first into it either.

"Genos, c-could you not do that?" Saitama stammered, glancing up at the cyborg.

Genos held a dark expression, standing by the bookshelf with one glowing arm raised like a gun to their current guest's head. It wasn't an ordinary charge either as with every second that passed in uncomfortable silence, Saitama could practically hear his motors whirring. Genos obviously didn't like their visitor. "I am simply taking precautionary measures against this intruder. You never know when he'll strike."

"Yeah but," Saitama blinked. "He's our guest right now; you're being rude."

The burning light within his palm flickered as Genos expressed surprise. "But sensei-"

"Stand down toaster, do as your sensei says," Sonic opened a single eye and settled his gaze on Genos nonchalantly. He shifted in his seiza, the sudden increase of heat emitting from Genos's palm prickling at his scalp. He allowed a wry smirk grow. "And lay off on the arm canons, it's drying out my skin."

A dangerous whirring stirred up in Genos's system as a flash of killer intent passed his gaze. "I don't think you're in any position to making jokes."

Sonic made a forced laugh and shrugged. "Whatever," He closed both eyes again, brimming with confidence as the cyborg only burned. "Do what you want but if you blast me here and now, you'll be setting your own flat on fire."

"Is that permission?" Genos flared.

"Genos."

The young cyborg blinked as the stern tone jerked him to attention. Saitama sat with a serious stare, causing his roommate to quickly cease glowing and desist from aiming a blast at their guest's head. Sonic watched with pure satisfaction as the still fuming male shrunk away, still glaring daggers in his direction even as he retreated into the hall to retrieve some tea.

Saitama let his look fall and let out an exasperated sigh.

"Hm, well he's not that bad. At least not when he's obedient," Sonic commented, raising his voice just enough that the cyborg could easily hear him from the kitchen.

"Okay, quit with the taunting Panic." Saitama really had no idea how he got to this point.

"It's Sonic! Speed O Sound Sonic dammit!"

Probably no idea.

"Sonic, yeah uh," He paused for a moment and slouched over the table. "So, why are you here exactly? You made it clear that you're not here to fight me and you don't seem like the type to just want to hang out so..." Sonic really ever only appeared for one specific reason.

"Right, straight to business," Sonic muttered to himself, completely forgetting his anger. Resuming neutrality, he reached behind his back and easily pulled out what appeared to be a scrunched page. "I came to ask for your advice about this."

Well, a favour wasn't something he expected either. Though then again, everything about what Sonic was doing right now was out of the ordinary. After several unfortunate encounters, Sonic had easily cemented himself as one of the few people who challenged Saitama repeatedly after being beaten. His cocky personality didn't exactly fit with the scene at the moment. Sitting in a seiza was usually Genos's thing, so seeing Sonic sit in one was a bit strange. Though he had to admit, Sonic was less stiff than Genos. He actually looked like he'd done it often like it was normal. Saitama never preferred sitting that way, it usually left him with numb legs and feet. Sonic actually putting an effort into being polite(to Saitama at least) was incredibly out of place, and he frankly thought that Sonic hit his head or something when he walked through the door as normally as he had.

"I got a letter this morning at my door." Sonic placed the paper on the table, working at uncurling it so it laid flat. "After I read it, I realized that it'd be foolish of me to speak to anyone else about it. As much as I hate being forced to...ask for your help, I figured I had no choice."

"Yeah, yeah, so what's it about then?" Saitama watched as the paper was straightened out and scratched an itch on his back. He really didn't like unneeded anticipation. His knee got restless.

Sonic pulled the paper off of the table just as Genos arrived to set down two cups of tea and third for himself. Both exchanged spiteful glares as he proceeded to sit himself down with his legs crossed, opposite of Sonic's position.

Sonic attempted to ignore Genos's glare. Glancing at the paper in his hand once more, he appeared to contemplate speaking before finally forcing the words out of his mouth. "It's...a hero certification."

A/N: Nice to meet you!

First off, a little information. The main version of this fanfic that updates better is on AO3, but I will update this accordingly as well. The version on this site is mainly a backup.

Hope you enjoy! Please review if you'd like!