Sky Curtain: An Initial Overview of the Immortal Lord of the Myriad Laws of the Mortal World

On countless screens across the myriad realms, images flowed, and a new review slowly began amidst great anticipation.

This time, the figure of a woman appeared on the screen, and her story seemed to span the past and present.

[A Chronicle of People Who Fell in the Same Direction as the Sun and Moon – Witnesses Through Time: Atona]

Atona was a member of Fucheng 3,000 BC. He was originally a student of the owner of Zhiwu. He was caught by Chen for sneaking into the library to look at clay tablets and condensed cursive script without permission. Later, the elders arranged for Chen to be his mentor, and he followed Chen from then on.

Dr. Stone's World, the Kingdom of Science.

Senku Ishigami picked at his ear, a slightly excited smile spreading across his face.

"Wow! Interesting. He got caught peeking at knowledge, but ended up becoming the other party's student? That's a good omen with a 100 billion probability."

He picked up a stone slab and began to scribble and draw on it rapidly with charcoal.

"Clay tablets and stencils—these are crucial carriers of information in ancient civilizations. This woman named Atona, in that barbaric era filled with so-called 'supernatural powers,' harbored such a pure thirst for knowledge itself, rather than blindly pursuing power. Her thirst for knowledge is more valuable than any supernatural ability. As for that guy named Chen, the fact that he could see value in this behavior instead of simply killing people shows that he's not just a simple muscle-bound fool. Hmm, this start is very scientific!"

Re:Zero world, Roswaal's mansion.

Natsuki Subaru, who was pruning the flowers and plants, shuddered as if he saw a familiar figure.

"Wow, trespassing into forbidden territory without permission, getting caught by a super strong guy, and then unwittingly becoming his lackey... This script seems a bit familiar to me?!"

He wiped the cold sweat from his forehead and complained with lingering fear.

"However, Miss Atona is much luckier than me! She was only assigned to be a student. Back then, I was... cough cough, let's not talk about it. But seriously, is it lucky or unlucky to have such a powerful-looking person as a mentor? Being around such an imposing person every day must be very stressful. I hope she doesn't have to go through any of those terrible things like returning from death."

---

The text on the screen continued to appear, telling the story of that long-forgotten past.

After meeting Can Yi, the three became close friends, and only went their separate ways after all three had achieved great supernatural powers.

---

In the world of *Naruto*, at a certain hot spring inn.

Jiraiya put down his pen, picked up his sake gourd, took a swig, and his eyes revealed a hint of nostalgia and emotion.

"Three people, sharing life and death, growing together to reach the pinnacle of an era... What an enviable story! Back in the day, wasn't that how it was for me, Tsunade, Orochimaru, and me?"

His voice carried a hint of intoxication, yet remained perfectly clear-headed.

"However, when everyone becomes powerful enough to uphold their own 'path,' parting ways seems to be an inevitable outcome. Strength is both the glue that binds us and the sharp blade that tears us apart. I wonder where these three people's 'paths' will ultimately lead. I hope they can have a better ending than us... Sigh, such a good subject matter, yet it makes me a little sad."

*One Piece* World, Thousand Sunny.

Luffy's mouth was stuffed with meat, and he shouted indistinctly.

"Wow! These three are partners! That's amazing, they've all become 'Great Supernatural Powers'! They must be incredibly strong!"

He swallowed the food in his mouth with force, his eyes sparkling.

"But why separate? Shouldn't comrades always be adventuring together? If it were me, even if I found One Piece and became the Pirate King, I would never separate from Zoro, Nami, and the others! Going our separate ways? I don't want that! When we're hungry, we eat together; when we encounter enemies, we fight them together. That's what comrades are all about!"

---

The scene shifts, and the warm atmosphere suddenly turns heavy, foreshadowing an inevitable breakup.

After Fucheng was destroyed, Atona returned to Chen for a period of time, but Chen went his own way, causing a devastating catastrophe. From then on, Atona and Chen became adversaries.

Spellcasting Returns to the World, Advanced Specialization.

Gojo Satoru removed his blindfold, his six pale blue eyes staring silently at the screen. Gone was the frivolity of the past; only a faint, unyielding melancholy remained in his gaze.

"A dearest friend... what a heavy and troublesome word."

He spoke softly, as if he were talking to someone, or as if he were talking to himself.

"One chose to protect, while the other went to extremes. Trying to stop them, we found our paths had already diverged, never to intersect again. This sense of powerlessness is infuriating. What were the feelings of that woman named Atona during that time, staying by Chen's side? Was she trying to pull him back, or... just wanting to see him one more time? Well, who knows? After all, the choices we have are always pitifully few."

The world of Code Geass, Ashford Academy.

Suzaku Kururugi stroked the knight's badge on his chest, a look of pain on his face.

"Wrong methods will not produce right results!"

His voice trembled with excitement, as if the story on the screen had reopened the deepest wounds in his heart.

"Whatever Chen's initial intentions were, he was wrong the moment he caused such devastation! Atona's choice to be his enemy was the right one, and the only one! But... who can truly understand the pain of turning against one's best friend? For the sake of the world, for the sake of justice, one must sever personal feelings. This is the price one must pay to become a Punisher, a price that is... far too heavy."

---

The light on the screen intensified, as if replaying that earth-shattering battle.

Atona and San-i fought against Chen together. Atona paid a heavy price in this battle, losing thirty years of her lifespan. Together with San-i, she sealed Chen and made a promise with Chen that when Atona and Chen reached the moment of their true death, she would give Chen freedom.

Fullmetal Alchemist* World, Central City.

Edward Elric looked at his metallic-gleaming mechanical armor with an extremely solemn expression.

"She paid thirty years of her life to stop him... What an extraordinary woman."

He remembered how he and his brother had broken a taboo and paid the price by sacrificing a part of their bodies in their attempt to resurrect their mother.

"This is 'equivalent exchange.' To gain something, you must pay an equal price. To prevent a catastrophe, to seal away her former best friend, the 'toll' she paid was her own time. And that promise... to grant him freedom at the 'moment of true death,' is both punishment and protection and a promise. She was using her life as collateral, betting on a distant future. This kind of awareness is not something everyone has."

Hunter x Hunter world, on a certain airship.

Kurapika's fiery red eyes flashed for a moment, and he instinctively tightened his grip on the chains binding his hands.

"A constraint and vow that comes at the cost of one's lifespan..."

He muttered to himself, his voice cold yet carrying a hint of resonance.

"To gain enough power to fight a formidable foe, she burned her own life—the most resolute and efficient means. She knew very well that conventional methods could no longer stop the man named Chen. So, she chose this path. Thirty years—such a long time—all for a seal. That agreement was more like a shackle, binding not only Chen but also herself. From that moment on, her life was tightly bound to that seal, that agreement, until death separated them."

As the smoke of the great battle dissipated, the text on the screen began to explain the true core abilities of this extraordinary woman.

Atona's innate supernatural power is to collect and record knowledge and important causes and effects in the world of supernatural powers. This is also Atona and Chiya's responsibility and ideal.

Attack on Titan world, Paradis Island.

Armin Arnold held a thick notebook, his eyes filled with awe and longing.

"Records... Is this her fighting style?"

He said excitedly.

"Not with swords, not with brute force, but with knowledge and records to connect the past and present. Collecting knowledge, recording cause and effect… this in itself is a magnificent act against forgetting, against chaos! Her existence is like the history of this world itself, a coordinate of civilization. Knowing the past allows us to see the present and predict the future. The strategic value of this 'One Who Connects Past and Present' is probably more important than any world-destroying force. She alone is a mobile library, a living fossil of history!"

The world of Overlord, the Great Tomb of Nazarick.

Ainz Ooal Gown's soul flame flickered in his eye sockets as he tapped the armrest of his throne lightly with his fingers, lost in deep thought.

"Hmm... a divine ability that can record 'important cause and effect'. This is not just simple intelligence gathering. If the 'recording' itself can influence 'cause and effect', or even fix it, then the terror of this ability will far exceed imagination. She can become the most impartial judge, or the most terrifying intelligence weapon."

He began to assess the situation from the perspective of the Guardians of Nazarick.

"We must maintain the highest level of vigilance against this 'Atona.' Her threat lies not in her direct combat power, but in her absolute information superiority. If we become enemies, she may be able to foresee and record all our actions, thus guiding them towards unfavorable 'causal relationships.' Conversely, if we can cooperate, she will be the strongest strategist in predicting the future. It's truly... a disturbing yet fascinating ability."

The world of *Under One Person*, Longhu Mountain.

Feng Baobao squatted on the ground, munching on a sweet potato, tilting her head as she looked at the screen, her eyes filled with pure confusion.

"Recording...is it just writing? Writing lots and lots of words?"

She chewed slowly and mumbled something.

"That sounds like a lot of trouble. Doesn't it give me a headache to remember so many people's stories? Why do I have to write down everything about fighting? But if I could remember all the delicious food, that would be nice. Does she remember which place has the best sweet potatoes?"

The Yorozuya (Odd Jobs Shop) of the Gintama world.

Sakata Gintoki lay lazily on the sofa, reading JUMP, while picking his nose.

"Huh? Recording history? Collecting knowledge? These sound like exhausting jobs, so why would anyone be scrambling to do them?"

He covered his face with the comic book and said weakly.

"Ah Gintoki, just remembering what brand of alcohol I drank yesterday and when next week's rent is due has already exhausted all my brain cells. And to remember grudges and feuds from thousands of years ago... please spare me. But then again, one was in charge of recording, one was in charge of causing trouble, and one was in charge of fighting. These three, when they were young, probably did just like our Yorozuya, noisily taking on countless jobs. Ah, youth, like a blanket soaked in urine—warm, but once it dries, all that's left is a map and the smell of urine..."