Time periods may be different, places may vary, and even worlds may be completely distinct, but the story is always the same. The world needs saving, and he will continue to deliver.
Midoriya Izuku may be quirkless, but he possesses the soul of a thousand heroes.
Midoriya Izuku was quirkless. That was an irrefutable fact.
He was ridiculed for it. Classmates would pick on him and throw insults endlessly, all the while laughing at his dream of becoming a hero.
Adults would gaze at him with pitying eyes, all the while trying to subtly dissuade him from his ambition.
"Why not doing something else?" They would say. "Being a hero is dangerous, you know?"
Even his mother, who he loved very much, would wear a pained smile whenever he professed his determination. Midoriya Inko wanted her son to succeed, for sure. But it was obvious that she herself found it hard to believe that it would come to pass.
Not that it mattered to Izuku, though.
He's saved people before, and he'll do it again.
Just like all his past lives did.
Bakugou Katsuki was powerful. He knew this as fact.
His quirk, 'Explosion', was one that heralded both awe and praise. With such a flashy and destructive quirk, it was only a matter of time before people began to see his brilliance. He soon became the de facto leader of every and any kinds of games. His classmates looked up to him as this great figure, while adults would tell him how he'd make for an excellent hero.
Yeah, he was awesome.
So really, why was this useless Deku still following him?! He didn't need a quirkless loser in his life!
He'd show him.
No one looks down on Bakugou Katsuki.
"I don't need your help!" The young blonde batted away Midoriya's hand with vicious force. Midoriya, for the most part, just looked confused.
"Well, why not?" The green-haired boy tilted his head.
Bakugou snarled. "I don't need some quirkless loser to take pity on me! I'm stronger than you!"
Midoriya blinked, before an amused smile graced his features.
Bakugou didn't like that one bit.
"You making fun of me Deku?!"
The boy shook his head in response. "Oh no Kacchan! And I'm not looking down on you either! I'm just helping you! That's what friends are for, aren't they?"
Friends?
"I don't need a friend like you!" The blonde spat. "Who cares about a quirkless loser anyway!"
Bakugou would've spoken more, but Midoriya's gaze stopped him cold. His viridian eyes seemed to bore into his very soul, daring him to refute. His smile was still there, but it seemed to take on a whole different meaning; one that was challenging him.
"I may be quirkless, but I'm not useless."
Bakugou soon came to believe that.
After all, as much as he wanted to paint Deku as this weak, incompetent fool who didn't stand a sliver of a chance at being a hero, he simply couldn't.
It's kind of hard to do that when he keeps kicking your ass.
Sure, Bakugou had a quirk practically built for offense, but when Deku wanted to, he could be vicious. Every single fight he's been in Deku has only resulted in his face meeting the floor, and try as Bakugou might, he just can't seem to land a proper hit on him.
Shit, he once got clocked in the face so hard his teeth came out!
That took a while to explain to their moms.
At least he finally got to see Deku express fear. Who knew Auntie Inko could look so scary with a feather duster in hand?
As they both grew from kids into teens, Bakugou eventually came to accept that Deku would make a good rival, and even a close friend.
Doesn't explain why Deku is so cryptic about how he got so strong though.
"Deku!"
"Yes Kacchan?"
"How the hell do you fight like that?!"
"A scarecrow with a headband taught me!"
"What the shit does that mean?!"
And if that wasn't enough, he also showed skill in weaponry of all things.
It happened when the two were walking home from Aldera Junior High, and as they passed by a convenience store they noticed a masked man rushing out. A gun was present in his left hand while a large bag of what was assumed to be cash.
This was a picture perfect robbery scene, and as any aspiring hero would (read: Bakugou Katsuki), the villain needed to be stopped.
His palms started flaring as his quirk activated, but before he could move Deku grabbed his hand.
"Oi! What the fuck Deku!?"
His friend turned to smile at him briefly, while his other hand reached into his pocket to draw...
A switchblade?!
"You can't use your explosions Kacchan. You'll be arrested for illegal quirk usage!"
Bakugou would've spouted something about how a knife was any more legal than his quirk, but then Deku's hand blurred into movement.
The switchblade (which was still closed, thank God) soared through the air like a bullet and struck home on the robber's head. Now, that level of precision on its own was startlingly impressive, but the real shocker came from the aftermath.
The robber's head rocketed down into the floor as if it was hit by a hammer, and struck the floor with an audible 'thud'.
Without wasting time, Bakugou dashed over to the downed enemy to restrain him, but as it turns out that wasn't needed.
He was out cold.
"Deku, how the fuck did you knock him unconscious?!"
Said boy was in the midst of keeping his switchblade when he glanced up. "Oh! He's unconscious?"
"That's what I fucking said!"
"Oh wow that didn't go to plan. I guess I didn't hold back enough." The words were mumbled more towards himself, but Bakugou heard them all the same. You needed to in order to understand half of what he spouts when in his trance, after all.
Bakugou's brain stalled as he processed the information.
"YOU WERE HOLDING BACK?!"
Deku blinked. "Well yeah? I didn't want to kill him after all."
...
...
Bakugou let loose a shriek so potent one would've mistaken it for the screams of the damned.
Nope.
Not dealing with this today.
Just gonna report this to the police then get the hell out of here.
Midoriya sighed. Sure, Bakugou was a close friend, but he could be awfully tiring to deal with. You'd think that with the collective might of Midoriya's experiences, he'd get used to personalities like his.
"Nope, still can't handle them." He mumbled.
His memories of past times may not be crystal clear, but he still fondly remembers the scathing abrasiveness his saiyan rival practically exuded from his being.
The memory left as quickly as it came, and Midoriya soon returned his attention to the police officer that was asking for his statement. When asked about the wistful smile on his face, he merely played it off as being glad that he stopped a crime.
Some things just never changed, and he wouldn't have it any other way.