~ All rights to the character of Saitama belong to the original author 'ONE' and 'yusuke Murata'.
~ All rights to the world of My Hero Academia and the characters mentioned in this story, including the main character Denki Kaminari, belong to the original creator Kōhei Horikoshi. I do not claim ownership of the original story or its universe. This is just a Fanfiction.
~ Everything depicted in this work is purely a product of imagination and has no connection to real events, people, or places in any way.
Chapter 1: A Mundane Routine, A Cosmic Detour, and a Quirky Collision
The rhythmic thud of Saitama's sneakers on the cracked asphalt was the only sound breaking the early morning silence. Two years. Two years of the same, unyielding routine. One hundred push-ups, one hundred sit-ups, one hundred squats, and a ten-kilometer run. Every single day. He was twenty-four now, unemployed, and still stubbornly clinging to the dream of becoming a hero, even if his "training regime" was the butt of every joke his sparse acquaintances made.
He felt… different. Stronger, certainly. Faster. He could punch through a concrete wall without much effort, outrun a speeding car, and his hair, annoyingly, had begun to thin. A small, bald patch gleamed innocently at the crown of his head, a constant, irritating reminder of his chosen path. He frowned, wondering if the hair loss was a side effect of his rigorous, if simplistic, training.
His run took him past the usual dilapidated buildings of City Z's abandoned sector, a frequent haunt for the low-level villains and monstrous creatures that plagued his world. Today, however, something was off. The air shimmered with an unsettling purple hue, and a low, guttural hum vibrated through the ground.
"Another monster before breakfast?" Saitama mumbled, picking up his pace, more out of habit than genuine concern. He just wanted to get home, take a shower, and maybe finally get that online game's daily quest done.
Looming over the ruined cityscape was a colossal, multi-limbed creature of pure cosmic energy. It pulsed with malevolent light, its numerous eyes glowing like distant galaxies. It called itself "Grand Overlord Oblivion," and its monologue, delivered in booming, echo-laden tones, was already grating on Saitama's ears.
"Pathetic inhabitants of this insignificant sphere!" Grand Overlord Oblivion roared, its voice shaking the very foundations of the city. "Your paltry existence is but a fleeting spark before the eternal darkness I shall bring! Tremble, for I am the harbinger of true nothingness!"
Saitama stopped, rubbing his ear. "Can you keep it down? Some of us are trying to enjoy a morning run."
The Overlord paused its dramatic speech, one of its cyclopean eyes narrowing. "Insolent insect! You dare interrupt Grand Overlord Oblivion?" It raised several glowing tentacles, each crackling with destructive energy. "I shall erase you from the timeline itself!"
A swirling vortex of purple and green energy erupted from the Overlord, engulfing Saitama. It felt… tingly. Not painful, but undeniably weird. He instinctively punched, not at the Overlord, but at the distorted air around him, a simple, noncommittal jab.
The "tingle" intensified, followed by a sensation of being stretched and squeezed, like toothpaste being forced through a tube. The world dissolved into a kaleidoscope of colors, a dizzying spiral that made Saitama feel slightly nauseous.
Then, just as suddenly as it began, it stopped. He landed with a soft thud on something squishy.
Meanwhile, in a parallel world, within the vast, imposing walls of U.A. High School…
The atmosphere was electric. Today was the U.A. Entrance Exam, a crucible where thousands of hopefuls with "Quirks"—superhuman abilities unique to this world—battled against robotic villains in a simulated city to earn their spot in the most prestigious hero academy.
In Examination Zone B, a young, green-haired boy named Izuku Midoriya was in a bind. His Quirk, One For All, was still new and unwieldy. He'd barely scored any points, and now, a colossal, unyielding "Zero-Pointer" robot, a pure obstruction, loomed over the other examinees, about to crush the frail Uraraka Ochaco.
"Someone has to do something!" Midoriya cried, his heart pounding. Despite his fear, his hero instincts screamed. He gathered all his strength, ready to leap in, even if it meant breaking himself again.
Just as the Zero-Pointer's metallic fist descended, a rather unexpected event occurred.
THWACK!
A figure, slightly disoriented and looking rather annoyed, had just fallen out of the sky. He landed directly on the Zero-Pointer's head with a casual, almost comical impact. The robot, designed to withstand immense force, wobbled, its mechanical brain apparently short-circuiting from the sheer, inexplicable absurdity of a human being dropping onto its scalp. It stopped mid-swing, groaning, before slowly toppling backward.
All eyes, from the frantic examinees to the supervising pro-heroes watching on screens in the control room, were glued to the new arrival.
The figure was a young man, perhaps in his mid-twenties, with an increasingly noticeable bald spot trying to compete with his otherwise normal brown hair. He wore a plain gray tracksuit, slightly stained, and had a look of mild irritation on his face.
Saitama carefully stepped off the now-inert Zero-Pointer, looking around. "Well, this isn't City Z. And that certainly wasn't an Overlord." He then noticed a smudged spot on his tracksuit. "Oh, great. Now I have robot oil on my good pants."
Midoriya, still frozen in his heroic stance, could only stare. The Zero-Pointer, a machine built to be impervious, had just been… sat on? By a man in a tracksuit?
Present Mic, the flamboyant hero overseeing the exam, boomed over the loudspeakers from the control room: "WHAT THE HECK IS GOING ON?! WHO IS THAT GUY?!"
In the control room, the other pro-heroes were in an uproar.
"Did a villain infiltrate?!" called out Cementoss.
"No, he just… fell," observed an astonished Snipe.
Principal Nezu, the genius animal-hybrid principal, merely steepled his paws, a calculating glint in his small, intelligent eyes. "Interesting. Very, very interesting. A test subject, perhaps? Or a new kind of Quirk phenomenon?"
Back on the field, Saitama casually walked past the stunned examinees. He spotted Uraraka, still sitting on the ground, wide-eyed and slightly scraped.
"Are you okay?" he asked, completely devoid of heroic flair, just simple concern. "That metal thing almost hit you."
Uraraka could only nod mutely, mesmerized.
Suddenly, a spiky-haired boy with an explosive personality and an even more explosive Quirk stomped towards Saitama. Katsuki Bakugo, seeing a potential rival, was already fuming. "Oi! Baldy! Who the hell are you?! You think you can just show up and steal my glory?!"
Saitama blinked at him. "Baldy? It's just a small patch. It's getting bigger though, which is annoying." He looked around again. "So, where's the nearest supermarket? I could really go for some udon right now."
Bakugo's face turned crimson. "You're ignoring me?! I'll blow you to kingdom come, you extra!" He lunged forward, palms already sparking.
Saitama sighed. "Can't anyone just have a peaceful morning anymore?"
The entrance exam was officially in chaos, and U.A. High, unbeknownst to them, had just gained its most perplexing, powerful, and utterly unenthusiastic new "student."