Snow crunched under All for One's shoes. He strode across the barren Arctic landscape, glancing around and humming an old Christmas carol to himself.

As he crested a hill, a valley opened before him. Light shone from gingerbread walls bedecked with sugary frosting and gumdrop adornments, and glittering steam rose from peppermint chimneys. Elves carted wheelbarrows piled high with handcrafted Christmas toys, pushing their loads briskly across shoveled paths to an enormous burlap sack slumped across the back of an ornate red sleigh. Reindeer milled about in herds, snacking on hay and playing reindeer games, while others carried elves or hauled materials into the workshops.

All for One grinned. "Found it."

Off in the distance, so faint that it took three Quirks for the villain to hear it, a loud, sharp crack pierced the jubilant sounds of toymaking. One of his Quirks froze the space around him. Suspended between his eyes, just an inch from his face, was a spherical piece of striped candy. All for One popped it into his mouth. "They haven't made peppermint like this since I was a child. I missed the taste."

Raising a finger, All for One sent a concentrated shockwave through the air. Two miles away, on a snowy bluff beneath a camouflaged tarp, an elf sighting their second shot twitched and turned to snow flurries as a hole bore itself through their skull.

Air raid sirens blared across the North Pole. Windows slammed shut, chimneys went cold, and reindeer and elves sprinted for cover. Giant workshop doors rolled up, and chasms opened in the ice around the valley. Elves poured out in tactical gear, sporting candy cane clubs and peppermint munitions. Reindeer had sharpened antlers, and shirtless elves smeared with red and green warpaint upon their backs. Hulking snowmen drew themselves up from the landscape, and towering nutcrackers stomped in militant rows out of the workshops.

All for One cracked his knuckles. "Good. I was worried this would be too easy."

With a wordless roar, the elves charged. All for One didn't wait for them to approach. He waved a hand, and a swath of fire enveloped the front ranks. Elves screamed as their flesh sloughed away in piles of slush. Reindeer bellowed as they charged on, heedless of their burning hides and melting riders, and rammed their horns towards the villain from all sides.

All for One leapt nimbly over the charge, and the reindeer impaled each other in a tangled heap. Landing upon them, All for One stamped down and felt the crunch of bone beneath his shoes.

During the reindeer charge, the elves organized themselves into riflemen ranks and wheeled in huge candy cane cannons. A horn sounded, and every elf in the line fired upon the villain. All for One froze space again. Candy missiles hung like tree ornaments around him. All for One held one to his mouth and considered the rest.

"Thank you for the candy, but I couldn't possibly eat it all. Why don't you help me finish it?"

The candy shot back into the ranks of elves. An entire army collapsed into snow, save for one shivering elf clutching their rifle. They reloaded, fumbling the first peppermint round, and shakily aimed it.

Screaming, the elf pulled the trigger. Nothing happened. The elf stared down the barrel, perplexed, and the gun finally went off. All for One chuckled as the headless elf collapsed into snow.

A fist of ice slammed onto the villain. The icy landscape went silent, elves and snowmen staring at the spot where the villain had one stood in stark disbelief. One elf asked, "Did we do it?"

"I'm insulted."

Every gaze went towards the figure standing behind the snowmen. All for One dusted snow off his shoulder. "You'll have to do a lot better than that to kill me."

A gargantuan snowman roared, with icicles for teeth and burning coals for eyes, and ran on four limbs. It chomped down on All for One, burying the villain under its icy bulk. The snowman exploded in a burst of fire. As the snowman painfully drew itself up and tried to bring its melting bulk together, All for One seized its coal eyes and crushed them to dust. The snow fell in a lifeless heap.

The other snowmen, fashioned in the form of giants, ogres, and other brutes of lore swung limb and icy clubs at the villain. All for One tore them limb to limb, plucked out their eyes, and scattered their snow to the winds.

Once the last snowman fell, All for One rolled two lumps of coal in his hands. "I guess Santa's catching up on all the coal he forgot to get me."

"Coal's too good for you, monster!" an elf shrieked. They pulled a lever from inside the cockpit of their nutcracker mecha, and its mouth opened. A chestnut cannonball slammed into All for One. The villain brushed bits of shell off his suit. He walked forward, shrugging off giant chestnuts and peppermints. When he reached the first nutcracker, he leapt into the air, strengthened his arms, and flung a reinforced punch into its torso. The torso crumpled inward, jagged splinters flew everywhere, and the nutcracker sailed through the air and toppled two of its brethren.

Most of the nutcrackers backed away, but one ran full-tilt towards All for One. The villain punched it, but as it crumpled inward, the nutcracker opened its mouth. Hordes of tiny gingerbread men wielding pins and needles poured upon the villain and set about stabbing. The needles bent against the villain's skin, and a flick of the villain's muscles turned all the gingerbread men into cookie dust.

"You should've run," he told the crumbled cookies. "But I suppose I could catch you anyways."

Once All for One felled the rest of the nutcrackers, a booming roar shook the landscape. All for One turned and beheld a shaggy white behemoth looming over him. It stamped a massive, calloused foot down, crushing the villain.

The abominable snowman grinned in satisfaction, until it felt its foot rise. All for One tipped the monster over with one hand and said, "Gigantomachia's stronger."

After impaling the behemoth, All for One strode towards the humble home amidst the burgeoning toy factories. In the shoveled cobblestone path stood a snowman, with gnarled twigs for arms, misshapen lumps of coal for eyes, and a bent, shriveled carrot of a nose. A dusty silk hat perched precariously atop its head, and its corn cob pipe was plugged with soot.

"There's not much magic left in this old silk hat," Frosty said with a wan smile, "But I'll spend every drop of it to stop you."

All for One raised an arm to sweep the obstacle from his path, but Frosty got the jump on him. The hat quivered, and a snowy gust whipped across the North Pole. Snow blew in blinding sheets, turning the landscape into a swirling white void. All for One strode forward, marking the exact spot he saw the snowman and Santa's house, but found neither when he reached the spot.

"Very clever," All for One mused into the snow. "But can you keep this up forever?"

Amidst the howling winds and the splat of snow melting against his body, he heard no answer. All for One stood, arms crossed, waiting for his enemy to lose patience.

Out of the swirling snow came a sharpened icicle. It stabbed at the villain's nose, leaving a shallow cut along its bridge.

All for One idly wiped away the blood and closed the wound. "Jack Frost? Still nipping at people's noses, I see."

Chortling laughter echoed out of the snow, coming from every direction at once. "Can't let old Frosty have all the fun, can I?"

"That, or you're worried the snowman can't hold me."

The mirth left Jack's voice. "Perhaps not, but it's a good thing we have plenty of friends. Get him!"

Hoofbeats warned All for One of the presence behind him. A reindeer's antlers leapt at him from out of the snow. All for One batted them aside, but the reindeer vanished before he could kill it. Two charged from either side. All for One impaled one with shadowy spears, but the other stabbed his leg from behind. The villain twisted its neck and hurled it back into the snow.

"I'm getting bored. Do you think Frosty would survive if I turned this entire frozen wasteland into an inferno?"

A red glow pierced the veil of snow. All for One instantly honed in on it and leapt. The glow winked out, but the villain's hands closed around the reindeer's neck.

"My, what a useful Quirk you have."

Rudolph struggled and bashed its hooves against the villain's chest. His grip tightened, and the reindeer gasped for air.

"None of that, now. Be a good little reindeer and guide my way tonight, would you?"

All for One dug his Quirk into Rudolph. Against its will, its nose glowed brilliantly, casting back the snow with its light. As All for One swiveled the light around, he found Frosty, straining to whip up more snow.

"Found you."

Frosty tried to run, but the villain ran faster. His fist punched through its torso and ignited the snowman from within. The snowman shrieked until its hat caught fire, and all the magic rushed out of it with a concussive burst of fire.

Twin icicles pierced All for One's back. From behind his shoulder, Jack Frost snarled, "You'll pay for that!"

"A good effort. Next time, aim a little lower."

A burst of fire engulfed Jack Frost. All for One yanked the icicles out of his back and watched them melt between his fingers. Rudolph jerked in his other hand, suddenly reminding the villain of the reindeer he carried.

"Ah, thanks for reminding me." His hand tightened, and Rudolph's neck snapped. All for One left the reindeer in a snowbank and walked up to Santa's house. He knocked firmly on the front door and waited. When no one opened it, he tried the handle and found it open. The house was dark and silent as he stepped inside. A plate of milk and cookies sat half-finished at the table, and the chair was askew.

All for One stomped loudly, letting his footfalls echo across the house. "I know you're still here, Santa. Come quietly, and I'll let you live after I take your Quirk."

The villain didn't wait for Santa to reveal himself. Thermal senses showed nothing, but echolocation caught the faintest traces of many invisible somethings perched in the rafters.

All for One flung fire. The whole room lit up as the rafters burned. Short, pointy-eared, black-clad figures leapt down around him, brandishing katanas and kunai.

"Ninja elves?" All for One asked, amused. "And I thought I had seen everything."

The elves vanished. All for One took a slash across the throat and snagged the hand that did it. After crushing their wrist, the villain grabbed their skull and crushed them into the floor. Two more elves hamstrung his legs. While one Quirk healed the damage, the second unfurled a metal wire from his pants and snagged a passing elf by the throat. One whip-crack later, and the elf fell limply to the floor.

A hail of shuriken peppered his arms and legs. Poison trickled in his veins, instantly neutralized by another Quirk. With a shrug, his healing factor popped out the metal projectiles. "Is that the best you can do?" he asked.

A katana pierced his back, went straight through his heart, and came out the other side. Blood trickled from the end of the katana and dripped onto the floor.

"That one's for Jack," Mrs. Claus said from behind her black mask.

"I see you learned from your comrade's mistake. Commendable, but not enough to save you."

Mrs. Claus tried to pull her sword back out, but All for One grabbed it. He whirled around, dragging her off-balance, and swung an uppercut at her. An elf leapt and took the blow. Their chest crumpled inward, but their sacrifice dampened the blow enough to merely send Mrs. Claus staggering back.

Mrs. Claus reached back and drew two kunai. She threw one, which the villain sidestepped, while the other slashed across his eyes. While the villain dabbed the blood out of his eyes, Mrs. Claus pounced. Two more knives darted towards either side of the villain's head.

The villain smirked. Mrs. Claus hesitated a second too long, and All for One's arm shot up. She swiped at him with the knives, but they slid off the villain's skin.

"Perhaps now he will-"

A massive gunshot rattled the gingerbread walls. Peppermint buckshot slammed into All for One, overwhelming the inertial dampening Quirk that had frozen so many other projectiles. He let Mrs. Claus fly from his grip and tumbled into the table, smashing it into pieces.

"Get your filthy hands off of my wife!" Santa roared as he loaded another round into his shotgun.

"Nick, no! Get out of here!"

"I ain't running tonight. It's high time this naughty boy gets exactly what's coming to him."

All for One rose and dusted himself off. "I'm sure you've had my address this whole time. You could've simply stopped by and give me your Quirk anytime."

Santa snorted. "Let you control Christmas? Over my dead body."

"Do you have any idea how many idiots tell me that before I kill them?"

Santa fired again. All for One braced himself against the floor, and though the cookie floor shattered, the villain remained rooted in place. He took a step forward, and Santa fired the second barrel. The villain's foot slipped, but he grabbed the air to stay upright.

With the villain off balance, Mrs. Claus and her army of ninja elves threw senbon, locking All for One down through one pressure point after another. With most of his nerves disabled, All for One stood frozen mid-step, looking like a pincushion with all the needles sticking out of him.

Mrs. Claus drew a few skinnier needles and stalked behind the villain. "We knew you would come for us one day. Did you really think we wouldn't figure out your weaknesses?" She plunged a needle into his spine. "You may have access to every Quirk at your fingertips, but you can't use them all at once. It requires concentration, and the longer the fight goes on, the more likely you are to slip." Another needle plunged higher into his neckline. "And most importantly of all, none of your Quirks come naturally to you. You need to signal to your body to use a Quirk. And if your nervous system stops working, say, because you have a few needles stuck in it…" She jabbed in a third to prove her point. "Then you may as well be Quirkless."

All for One couldn't reply. His chest had seized up, and his heart skipped erratically as it struggled to find a rhythm. Yet, he remained unworried. The old woman was right about most Quirks not coming naturally to him, but there was still one Quirk that wouldn't fail him.

When the last needle went in, Mrs. Claus' finger brushed against the villain's skin. One for All shoved a telekinetic Quirk in her, then forcefully activated it. Every needle in the villain was yanked sideways. A few sank deeper into him, piercing vital organs, but most, including the ones on his neck, slid free.

With his Quirks restored, All for One stole back the telekinesis, yanked the few remaining needles out of him, and set his healing factor to restoring his body. The elves lunged, desperately trying to reapply the needles, but All for One blasted them with fire.

Two peppermint slugs slammed into All for One from behind. Snapping his spine back into position, All for One turned and stalked closer. Santa Claus fired shot after shot, pulling revolvers, rifles, and submachine guns from the sack around his waist. The villain weathered the assault, grabbed the sack, and tore it to pieces.

"I'll be taking my present now."

Before Santa could protest, All for One grabbed his arm and pulled. The Quirk slid easily into him. All for One cackled as he felt the power of Christmas flow through him.

"Hahaha- hohoho!" All for One boomed. "I've seen plenty of rejuvenation and age-reducing Quirks, but never one that promised immortality with such power. Granting presents? Any man who kneels before me can have whatever gift they desire." All for One sneered down at the old man gasping on the floor. "You were a fool to resist me."

"Ho ho - no wait. I get to really laugh for once. Ha. Ha-ha. Hahahahaha!" Nicholas wheezed with laughter. "Do you really think I wanted to spend all those centuries giving gifts out to snot-nosed children? It was fine for the first thousand years or so when there were just a few of them, but once the Industrial Revolution hit? Let me tell you, zipping around the world at light-speed and having cookies crammed into you until you puke gets really old after the first couple times."

All for One looked down. His black suit turned red before his eyes, with fluffy white trim and big gold buttons. His white hair brightened and turned curly, and a thick bushy beard sprouted on his chin.

"I admire your resistance to the end, but your little act can't fool me. You won't be having this back."

The former Santa Claus aged rapidly before his eyes. His head shriveled like an apple, and his hair curled up and turned to dust. "Hah. If you weren't on the naughty list, I would've given it to you centuries ago." His voice grew weaker, and his eyes turned milky white. "Going out like this… almost makes the whole time worth it."

Nicholas fell still. His body continued to decay until all that remained of him was dust, tattered rags, and weathered bones. All for One felt his new Quirk tugging at him, urging him outside. He let it lead him at first, until he realized he couldn't stop it. He tried dragging his heels, tried turning off the Quirk, but his body refused him.

As he walked back into the kitchen, he saw Mrs. Claus leaning against the wall, holding back the blood seeping from three needles stuck in her gut. Upon seeing him, Mrs. Claus chuckled and asked, "Enjoying your Christmas present, you maniac?"

All for One felt a list unfurl in the back of his mind. Dorothea Claus, on the nice list. The urge to give a gift filled him, and in a surge of desperation, All for One thought of the perfect one to give her. He stepped closer, hand outstretched.

Mrs. Claus stared wide-eyed in terror. She looked around, and her eyes fell upon the needles sticking out of her. Grinning up at him, she removed one and shoved it deep into her chest.

Frantically, All for One knelt by her. He tried forcing the Quirk inside, but it wouldn't budge. Mrs. Claus was already gone.

The Quirk drew him back onto his feet. All for One had a mental inventory running through his head, all the good boys and girls in the world, and every present they were supposed to receive. His sack didn't have enough presents. All the elves were dead, their factories silent. All for One had nothing else to give, except-

The villain dug his nails deep into his own legs, clawing at them, trying to hold back his steps as he drew closer and closer to the sleigh. "No!" he wailed. "No, you can't make me, I won't! No, no n- ho! Ho! Ho! M-Merry Christmas!"

With tears running down his face, the new Santa Claus set off in his bright red sleigh to deliver presents to all the nice children in the world.

When Izuku Midoriya awoke that morning, he rushed out to the Christmas tree, trembling with excitement. He had hoped for a stocking stuffed with candy and giant wrapped boxes, but instead, all that awaited him was a single handwritten note. Holding back tears, Izuku clumsily read it.

Dear Izuku,

This Christmas, you were an extra good boy, and I decided that you deserved an extra special present. Stretch out your hand and imagine your hand heating up.

Use it wisely, and Merry Christmas.

From, Santa

Izuku did so. He had to concentrate extra-hard, with a puffy-cheeked glare at his hand and very loud humming noises, but eventually, a single green flame lit up at the edge of his fingertips. He gasped with breathless joy and sprinted to show his mom.

And all around the rest of the world, some children woke up with new Quirks, while others whose Quirks reduced their quality of life woke to find theirs removed or replaced.

And All for One, many Quirks lighter and many pounds heavier, set about making presents for next Christmas.