BAMF

I own neither One Punch Man, which belongs to ONE, nor do I own My Hero Academia, which belongs to Kohei Horikoshi.

Author's Note: I ended up deleting Just Dropping In after realizing that I don't like DxD enough to make a generic fic with Saitama following around everywhere, especially since my DxD knowledge mainly comes from other Crossover Fics like Do Me a Wrong or Demon Misplaced. So before I posted my next chapter of Fate: Zero Hair I decided to post a replacement.

This draws inspiration from a similar fic called Trials and Tribulations. However, this fic will focus on a more canon Saitama (something I've been told I do well) inside of Bakugo (No, not like that, get your mind out of the gutter).

Chapter 1: The B in BAMF stands for Bald

Bakugo was Saitama and Saitama was Bakugo.

This was simple.

Since his reawakening, approximately twenty-three seconds ago, he had been processing this fact. 'Saitama' seemed to be dominant through sheer will power, but the Bakugo bits were still very much there.

What 'Saitama' understood was that he was basically in an Isekai without an evil Demon Lord to fight and no way home. It had taken him about ten seconds to accept this fact.

What was worrying was when they awoke to find himself in a rather strange situation.

Strange situations were nothing new for 'Saitama', but there is an intrinsic difference between waking up to fight an invasion of mole people versus waking up to playing the main role in some strange slime yaoi hentai.

While he wasn't discriminating against the...thing...he wasn't exactly into it personally but before he could extricate himself the green-haired boy (The 'Bakugo' in him whispered the name, Deku) appeared. It was a bit impressive that a powerless boy with a completely average physical build was brave, or dumb, enough to try and save him.

Ultimately pointless, but the sentiment was certainly appreciated. Once Mumbles got knocked away, ("Idiot", the 'Bakugo' in him, them?, hissed but there wasn't as much bite as there were confusion and worry) 'Saitama' prepared to punch his way out before All Might arrived and stole his thunder.

When they took him to the side to check for injuries they praised him for fighting back to which he stared blankly at the paramedics. He wondered if they would praise Mumbles too, unlikely as it was considering this world's obsession with superpowers.

He, 'Saitama', was still a little confused about his situation but at least he had hair.

The next day was interesting, to say the least. Everyone he met at school was congratulating him or complimenting him in some aspect or another.

"Hey Shiny Shit Head, why the hell are you even bothering going to that shithole when you're an adult?" The 'Bakugo' in him asked, spitefully as ever but with a subtle undertone of curiosity.

"I may be an adult in spirit, but I've got the body of a middle schooler, so I have to go to school." 'Saitama' paused, smiling idly (an action that terrified half the school populace, Bakugo smiling kindheartedly was an omen of ill-fortune).

"Don't lie Shiny Shit Head, you were probably the stupidest dumb ass to ever walk the planet." 'Bakugo' harrumphed, chuckling aggressively. 'Saitama could tell it was just a rib between (acquaintances, partners?) so he let it slide. The day went easily enough, with Bakugo pitching in to help with school work since he was a 'Brainless Shiny Shit Head Shit for Brains', a confusing and rather paradoxical statement (The Word of the Day Calendar that Mumbles had got him a few years ago was rather useful) but 'Saitama' felt pointing this out would just cascade the argument.

It was when he had gotten a bathroom pass and was walking down the empty halls that it hit him like one of All Might's Texas Smashes.

"You're kind of an asshole, aren't you?"

"No SHIT Sherlock!" 'Bakugo' grunted, "I can be whatever I want because I've got a strong quirk Shiny Shit Head. It doesn't matter how much of an asshole I maybe but I'll still be popular."

At least he was self-aware of his assholeness.

"But you aren't." 'Saitama' mused, something that caused 'Bakugo' to grunt in surprise for once, "From what I've seen no one likes you, but since you've got a strong quirk and a stronger drive, so they just pretend to like you, pretend to care, just so they can ride on your coattails or get bragging rights when you become a hero. It seems you're more unliked then Mumbles in actuality."

'Bakugo' was silent for a little bit as 'Saitama' walked down the hallway.

"That's why I'm such a jerk in the first place" He began after a long silence, "These parasites, these side characters hang onto every word I say like I'm Jesus F***ing Christ or something, they nod along and 'pretend' to be my 'friends' because I'm strong. By being a complete asshole, I won't be held down by these useless, generic nobodies. I'm the one destined to surpass All Might! Or I guess YOU are now that you've taken my body."

"About that, you seem strangely okay with that…"

"Can't you tell? As time goes on I'm slipping away...becoming YOU, never thought I'd die to my previous incarnation or something stupid like that." 'Bakugo' laughed, a slightly mournful and a hint of insanity. "I've seen how strong you are, that strength WE have now...at least I can go knowing that we are the best, that my dream to surpass the Symbol of Peace isn't just like Deku's pipe dream of becoming a pro-hero. That we left all the filth around us where they belong...in the dirt."

"Even Mumbles?" 'Saitama' asked, curiously.

"Especially Deku!" 'Bakugo' snapped, "He's the one that's been a shitty parasite longer than the rest of those useless shits!"

"That's where you're wrong…" Saitama mused, quietly. "I think Mumbles might've been the only person who liked you for...well, you."

There was silence.

"You know, just because you know curse words doesn't mean you have to use them like some edgy teenager."

"Go kill yourself."

"You mean to go kill ourselves right?"

"I hate you"

Izuku Midoriya was a smart kid. Despite his odd stubborn streak that rivaled Kacchan's, he was capable of adapting and accepting strange world breaking information and running with it.

All Might being a cripple? Alright (not that he didn't stay up late in fear of the idea of a villain capable of crippling ALL MIGHT).

One for All being a stockpiling quirk that was passed on from user to user? Neat, cool, just fine and dandy!

Being All Might's Successor. Well, that one required a little bit of fanboying (a very awkward three hours for Inko Midoriya which she wisely decided not to ask about).

But this was just world breaking. Kacchan was acting nice.

Not the traditional idea of nice, but considering he was usually screaming curses and randomly exploding people then apathy might as well have been sainthood for Kacchan.

Before Deku had been a hate-filled slur, now it seemed to be warmer, kinder. Added with Kacchan's new deadpan personality and frightening intuition it was as if a strange ghost had possessed his childhood friend.

After asking All Might about it, he had learned that trauma did strange things to the psyche, so perhaps being used as a human marionette and having to be saved by the Quirkless weirdo was the snapping point?

Either way, Izuku just didn't know how to interact with this new version of his friend. But if Kacchan was willing to put aside his explosive personality then maybe their friendship was salvageable?

On the day that 'Bakugo' and 'Saitama' became 'one', was the same day as the UA Entrance Exam, and the world was never the same again.

Author's Note: Hey there! Since this seemed to be a very small idea I thought I'd try my hand at it and...here we are! Depending on the reactions I will continue or just delete this story, so please tell me what you think!

(Just like in the manga, Saitama isn't the smartest when it comes to book smarts, but he is scarily observant in certain areas such as specific social cues, especially when others are involved!)

Constructive Criticism and Compliments, please! Flames are for weakminded potatoes! And you'll aren't potatoes are you?