Update: As a celebration of finishing Book 1 (And also for the fact Era of Izuku is now the most popular BNHAXAvatar fic in the site), I have officially launched an Era of Izuku discord server.

You can expect to find there news about future projects, progress reports on chapters, and illustrations made by other readers.

Hope to see you there!

Link: h-t-t-p-s-:-/-/-d-i-s-c-o-r-d-.-g-g-/-C-X-V-k-b-N-Y-U-9 (Just remove the hyphens).

序幕

PROLOGUE:

REBORN

July 15th, 184 A.Q.

For many, this day held no real significance in the course of their lives or history.
It was during the peak of All Might's golden age in Japan; his first duel with his nemesis, All for One, an entire decade into the future.
Japan was flourishing under that peace, the citizens enjoying it while the people in power were celebrating the diminishing influence All for One had over the country thanks to their Hero's efforts.

The world itself seemed to take a break that day.

No major villain attacks in any country.

No natural disaster.

Not anything worth of note for the average person.

Save for a few, the entire planet was unaware that day marked the beginning of a New Era...

An Era the likes of which can only be remembered by the oldest and wisest of the Spirits.

Exempt from 'The re-rise of the Avatar, The life story of Avatar Izuku' by Brian Konietzko and Michael Dante Dimartino.

Location: U.A High school, Japan

"Huh?", An elderly woman hummed once she noticed something from her plethora, almost making her pen slip from her grip.
Putting down the pen on her desk, Recovery girl dropped from her chair and walked towards the window, poking her head out.

"Weird, I could've sworn I saw-"

"Chiyo, is something wrong?" A feminine voice called out from behind her.

Recovery girl turned around to face the voice, finding a woman that appeared to be in her early fifties. Her shoulder-length ash-blonde hair was slicked back
and no faults could be found in her pristine dark suit.
A pearl neckless was hanged around the woman's neck, the only sign of individuality in her appearance.

"Oh, hello Kaichi." The elderly woman greeted U.A's current principal, "Nothing is wrong, I just thought I saw something fly by."

"A bird?" The principal raised a brow, "Hardly something to drop everything and come look over, no?"

"No, no, it wasn't a bird... At least I don't think so..." Chiyo shook her head and before deciding to drop the subject. "Anyway, how can I help you, principal?"

"Ah, yes!" Kaichi nodded, "I was looking at the plans for the final exams for the first years. I think we might need to lower the difficulty of it a bit;
unless you want to have enough patients to not only warrant that renovation to the infirmary that you requested but also the construction of an entirely new one."

"As tempting of an offer as that may be..." Recovery girl held a perfect poker face as she talked, "I think I'll pass."

"I figured as much." Kaichi chuckled, "But I still needed to be sure, we'll hold a meeting tomorrow where we will decide on the exact course for the finals. Until then, have a nice day!"

And with that, the principal left the infirmary, leaving the elderly woman alone. 'I'm going to miss her when she leaves next year. I wonder who the new principal will be...'

With the 'bird' forgotten, Recovery girl made her way back to her desk and returned to read through her files, completely missing the bright blue spirit that flew by her window again.

Location: Amundsen-Scott research station, South Pole

"Mei! Come here quick! You gotta see this!"

"Huh?" Mei-Ling-Zhou, a short woman with brown hair that was held in a bun and square glasses, turned away from her computer, "What is it Opara?"

Opara - a large man with dark skin, stubble-like beard, and rounded glasses with tiny lenses - didn't even turn to look at her, his face glued to the window and staring outside with an expiration of absolute awe.

Curious, Mei decided to join her fellow scientist and peered out the window.

Her jaw dropped to the floor, "Wha-What is this..."

Up above in the night sky of Antarctica, rays and arcs of light were visible.
Snakes of luminescence twisted across the sky, their blue and green glow weaving together to overpower the light of the stars, demanding the complete attention of any possible observer.

"I-I don't know..." Opara murmured, "I never saw anything like this... I never heard of anything like this..."[1]

"Do you realize what this means?" Mei asked, shaking in her place from excitement.

"This could very well be the discovery of the century..." Opara murmured, following Mei's train of thought.

"Too bad no one's gonna care..." Opara and Mai heard a voice behind them, seeing their ginger co-worker Macready, "Everybody's too busy gawking about quirks and quirkologists to mind what real scientists do."

Location: Fukuoka prefecture, Japan

A tall, muscular young man sat in a perfect lotus position under the shade of a wooden pavilion in his garden.

His pale grey hair ruffled gently in the calm breeze that swept the gardens, gently flowing in between the trees and bushes; above the small pond, and under the roof of the pavilion.

The man breathed in, his eyes closed as he tapped onto the branches that connect all living things, looking beyond the material world.

"*Gasp*"

The man took a quick intake of breath, his closed eyes opening wide in his surprise.

"The balance has shifted..."

Location: Unnamed swamp, India

The swamp was a place humans seldom visited.
With its' rough terrain, dangerous fauna, and all but complete remoteness it provided the ideal shelter for those who wished to stay away from humanity.

And who wished for this distance more than the spirits?

Spirits had inhabited the swamps for longer than humanity could remember, watching from the sidelines as men built cities and destroyed them; waging war on one another; killing one another; slowly killing the planet, one carbon-dioxide atom at a time.

The spirits had no reason to be happy in their shelter, watching humanity's fall from grace from afar, knowing it would one day catch up to them.

Yet, today, the spirits rejoiced and cheered together when they felt the energy of the planet shift, giving them hope - if only the slightest - for the first time in millennia.

They were back.

Location: Unknown

"It... CAN'T BE!" A large man with short, white hair ground his teeth together, clenching his fists so hard he drew blood, staining his black suit.

"M-master?" A short, bald man wearing a lab coat turned to the enraged man, his large mustached shaking in fear from the aura he felt from his boss. "What happened? Is something bothering you?"

The large man did not show a single sign he heard his subordinate, as if he was trapped in an endless spire of thoughts, 'This isn't possible, it shouldn't be possible! They were gone for thousands of years! Why show up again now?! DAMMIITTTT!'

"GARAKI!" All for One shouted, causing Garaki to stand in attention. "Start contacting every ally we ever made in every country possible! There is something we need to take care of before it is too late!"

Kyudai Garaki's jaw was on the floor. He never saw his master distressed, not even once. But now All for One wasn't just distressed... he was full-on panicked! 'What on Earth could make him act this way?!'

'We need to find it as soon as possible; I can't let it become fully realized...' All for One twirled his fingers together, a habit he thought he kicked a century ago. 'But how can I search the entire planet for it in such a short amount of time?'

Location: Hero Public Safety Commission H.Q, Japan

"My, my... that's quite the development" A rodent-like Chimera sipped on a warm china cup of tea, savoring its flavor as he aimlessly watched the light-blue sky from his office.

"Life sure is full of surprises!" Nezu chirped to himself, his reflection in the window staring back, "First, I'm going to be U.A's next principle, and now this!"

The quirked animal let out a soft sigh, smiling gently to himself. "To think... I would get to witness the Avatar's return in my lifetime..."

Location: Musutafu general hospital, Japan

A young man in his late twenties looked at a small bundle of blankets like it was the most important thing in the world.
Unshed tears were gleaming in the man's eyes, threatening to drip on his freckled cheeks as his curly and wild black hair ruffled itself from his shaking. In one of his hands, he held a small handheld camera, recording the event in front of him as if he was petrified of the thought of forgetting even a second of it.

"This is our son... Inko this is our son!" He murmured, disbelieving, for the hundredth time, tears poking the way out of his eyes.

His wife, Inko, merely smiled gently back at her husband.
The woman looked like a mess, her eyebags had eyebags that had eyebags of their own after seventy-two hours in labor. Her hair was disheveled and messy, almost competing with her husband's even though usually her hair was as smooth as silk.

But she didn't care about it right now.

Not one bit.

She stared at the bundle of blankets in her arms with all the love in the world, looking straight at the baby who was nuzzled there gently, sleeping peacefully.

Even if the baby boy wasn't held by one of his parents, if one were to look at the kid and then at the two adults, they would be able to infer immediately that he was their son.
The boy's face was almost an exact copy of his mother's.
His cheeks were round and chubby, almost urging his mother to pinch them and wake him up. His small nose matched her's perfectly, slightly twitching with every slow intake of breath he took. And while they were closed, the baby's eyes were noticeably round, almost like that of a puppy.
A soft tuft of fluffy green hair had already grown on the boy's scalp, a clear trait from his father who still fought off bursting into tears.
Small and pale freckles dotted the baby's cheeks, as well as the bridge of his nose, the darkest of which were in a diamond formation on each of his cheeks.

*Thud*

*Thud*

*Thud*

*Thud*

The sound of hurried footsteps made its way to the hospital room the family occupied, soon followed by the door being torn open abruptly and four people in their fifties stepping in.

"Where is my grandbaby?!"

Each of them whispered-yelled darting their heads from one corner of the room to the other before their eyes landed on the baby held in his mother's arms.

Inko held her finger in front of her lips, a frown on her face. "Shhhh! Mom! Dad! Not so loud! You might wake him up!"

The new grandparents didn't show any sign they heard her, though they did quiet down as they approached the baby and his mother.

"He looks just like you dear..." Inko's mother cooed at her grandson, brushing a finger gently against one of his freckled cheeks.

"Figures that once the four of us went to get some food you'd give birth..." Hisashi's father mock-grumbled, a small smile on his face as he too focused entirely on the baby.

"Hisashi, drop the camera and hold your son for a bit, you're his father..." Hisashi's mother chided her son, who almost lost his grip on the camera upon being called out.

The new father handed the camera to his father-in-law before he approached his wife and scooped up the small bundle of blankets from her, sitting on the bed at her side.

Every adult nearly burst out and squealed when the baby's eyes fluttered open, revealing irises the same emerald color as the mother while having the same jewel-like shape as his father.

"Hi there, Izuku..." His father cooed in a gentle voice, extending a finger to brush against his cheek like his mother-in-law did.

The baby, Izuku, had other plans.

*Grab*

Chubby and tiny hands wrapped themselves around the extended finger, the baby staring at it as if it was the most interesting thing he had ever seen.

"Ohhhh... Inko! He's holding my hand!" Hisashi squeaked, tears free-falling from his eyes, "He's holding my hand Inko!"

The Midoriya family spent the rest of the day cooing at its new addition, not at all aware of how many gears began to turn due to his birth.

[1]: The Aurora: As explained in the original series, the Aurora in the Avatar world is a by-product of the spirits, having no connection to the way Aurora appears in real life. This is also canon to the Era of Izuku universe. In other words, in this universe, humanity hadn't experienced the Aurora ever.