Within the Setsuna Splendor Space, the cold light of the luminous pearl refracted countless spots of light on the barrier wall. Tsubasa huddled in a corner, his knees piled high with glowing parchment scrolls, his fingers sketching runes in the air, his hair adorned with floating golden characters. This was the seventieth "year" he had continuously "immersed" in the space, and the dizzying sensation of the passage of time had long been dispelled by his thirst for knowledge.
"If you keep going like this, you'll become obsessed. I'm a little scared to see you like this." Tian Yueqing pushed the food she had taken from the sealing scroll in front of him, her red hair casually tied back. "The clansmen outside are all watching you. They don't know how you've been able to stay inside without being corrupted by the time energy?"
Tsubasa even looking up, Tianyi's fingertips suddenly emitted a ghostly blue light as he attempted to fuse the Space Sealing with the life runes. When the two energies resonated subtly, he leaped up, knocking over a pile of books. "Success! Using time anchors to fix the decay rate of life fluctuations—this formula can slow down cell aging! So that's how the Yin Seal works!" He laughed like a child, his eyes shining, oblivious to Yueqing's helpless yet doting gaze.
This scene plays out almost every day. Every time he deciphers the core secret of a Sealing Jutsu, Tsubasa back and forth in the small space, muttering to himself, as if he has discovered a new continent. When researching the soul seal, he once fell into a meditative state, completely unaware of Yueqing's shoving until Yueqing pinched his philtrum and he was awakened.
"You'll die suddenly in the time folds like this," Yueqing warned countless times, yet one day she discovered she was also infected. Seeing Tsubasa combine Space Folding Jutsu with Time Rewind runes to create an experimental seal that could briefly pause local time, she, as the most talented Sealing Jutsu of the Uzumaki Clan, was eager to join the discussion. The two often argued heatedly over a formula, only to smile at each other when breaking through a bottleneck.
Outside the space, the Uzumaki Clan watched Tsubasa record knowledge, and Uzumaki Ashina always shook his head and sighed, "This kid is simply a glutton for Sealing Jutsu." He stroked the data that Tsubasa frantically recorded every time he came out, "Last time, someone inside stayed for three months straight and had a mental breakdown, but he actually persisted for so long." What was even more amazing was Tsubasa's learning method—never rote memorization, but rather dissecting the underlying logic of each rune like disassembling a machine, even questioning the notes of a master from a thousand years ago.
On a certain "early morning," space trembled violently. Tsubasa stood in the center, covered in blood, a maniacal smile on his lips—he had just completed the forbidden "soul quantization" sealing experiment. Although it triggered three spatial alarms, it proved that the soul could be transformed into an energy form through specific runes. This discovery was of extraordinary significance: after death, the human soul could be reincarnated through a sealing array, possessing memories of its past life, and could Immortal Cultivation even as an infant. The Senju Clan might become a family of Immortal Cultivation.
"He... he's rewriting the fundamental rules of Sealing Jutsu!" Uzumaki Ashina's voice trembled, his cloudy eyes fixed on the theoretical data of the Tsubasa. "This will allow humanity to enter the realm of gods. It's insane. Imagine the terror of a group of peerless powerhouses being reborn and starting anew."
In a corner of the Setsuna Splendor Space, amidst piles of ancient books, Tsubasa, his eyes bloodshot and his hair disheveled, huddled among the parchment scrolls. His fingernails were stained with ink, his hair was greasy and stuck to his forehead, yet his eyes shone with a fanatical light brighter than ever before.
For over seventy years, he devoured the knowledge of Sealing Jutsu in this small world like a ravenous beast. From basic Hand Seals techniques to the top-secret tomes considered forbidden by the Uzumaki Clan, he left no detail unexamined. When tired, he would lie down and sleep or swallow Cleansing Pills; when hungry, he would eat Military Rations Pill. His mind was filled with nothing but Sealing Jutsu.
"This node should be adjusted like this, this rune should be matched..." he muttered to himself, then suddenly slapped his thigh, making the inkstone on the ground jump up, splashing ink all over his hands and face without him noticing. Those profound and obscure sealing theories were puzzles waiting to be solved in his eyes, and he had fallen into a kind of fanatical obsession. Every time he solved a problem, he would laugh and shout in the space, looking like a madman.
Today, his theoretical knowledge of Sealing Jutsu has reached the level of a grandmaster recognized by the Uzumaki Clan. He can easily master defensive and offensive sealing techniques, as well as advanced secret techniques for sealing Tailed Beast. But he is not satisfied and has set his sights on an even more insane area— the Soul Quantization Rebirth Sealing Formation.
Through countless days and nights of research, Tsubasa's brain operated at high speed like a tireless machine. He combined Sealing Jutsu with his understanding of the soul and proposed a groundbreaking theory: by quantizing the soul, breaking it down into basic energy forms, and then using exquisite Sealing Jutsu to recombine them, he guided them into a newborn embryo to achieve rebirth!
"Look!" He waved a sheet of paper covered in formulas and incantations at the empty space, as if there were doubters before him. "The soul is like a complex network of energy, Sealing Jutsu are the threads that untangle that energy! With precise control, a shattered soul can be rewoven!"
He meticulously planned each step, refining the details through countless calculations. From soul extraction and quantization to the adaptation and injection of the new embryo, he rehearsed each step in his mind a thousand times. Theoretically, it was flawless, lacking only the final step—the experiment.
"Just one last step..." Tsubasa's fingers gripped the parchment scroll tightly, his knuckles turning white, his eyes burning with an almost obsessive desire. "If the experiment succeeds, this world will be completely changed!" His maniacal laughter echoed in the secret room, stirring up dust in the corners, foreshadowing a world-shaking revolution that was quietly brewing.
Tsubasa once again stepped out of the Setsuna Splendor Space, returning to his 12-year-old self, his eyes revealing the vicissitudes of time and the madness of a researcher, his heart filled only with experiments.
Tian Yueqing was very worried when she saw him come out. Although she often stayed in her space, she would come out once every hundred days to relieve the pressure, while Tsubasa, because of his Perfect Sage Body, could withstand the erosion of time and energy, and could stay as long as he wanted.
" Tsubasa, you're out now. Take a rest, or you'll go crazy if you stay in there like this."
Tsubasa's eyes were filled with madness. "Sister Yueqing, come and do an experiment with me! Soul Quantum Reincarnation Jutsu. If it succeeds, Master and Grandpa can return to the human world as newborn babies."
Uzumaki Ashina rushed out from the side. "You crazy kid, how confident are you in succeeding? And is this technique something anyone can perform?"
Tsubasa: "Theoretically, anyone can perform this if three prerequisites are met, with a 100% success rate. However, it has never been tested in practice."
Uzumaki Ashina: "Which three prerequisites? Why weren't they written in your materials last time?"
Tsubasa: "The first is a complete soul; a new life conceived from an incomplete soul will also be incomplete."
Secondly, the practitioner must possess significant strength and theoretical knowledge of soul Sealing Jutsu. Insufficient strength prevents the precise delivery of the soul into the mother's womb, while a lack of theoretical knowledge hinders the accurate quantization of the soul that retains memories from the previous life, potentially resulting in deformed children or stillbirths.
The third is soul adaptation and complete soul harmony. Sealing Jutsu isn't powerful enough, how can an adult's soul be restored to the form of an infant? Like an elderly person reverting to an infant's appearance—that's still human, but what about an animal?
Uzumaki Ashina gaped, and after a long pause, said, "According to you, it's completely impossible for humans to complete reincarnation. You even thought of animals."
Tsubasa: "There is a difference between the soul and the body. As we all know, soul particles can be reassembled after being scattered, which is why the Impure World Reincarnation can be restored after being destroyed. Without human intervention, a soul that has been scattered and reassembled will generally still look the same. A dog's soul, once scattered and gathered together, will still be a dog's soul, and the same is true for humans. However, through sealing runes, the soul can be reassembled and rearranged. A dog's soul can be arranged into the shape of a human. This involves knowledge of human anatomy, which must be completely mastered without any deviation, otherwise it will be a disabled person with missing parts."
Uzumaki Ashina exclaimed in shock, "No one could possibly accomplish this! It's entirely within the realm of gods!"
Tsubasa confidently stated, "I'm confident I can complete it. I have the knowledge and the ability. All that's missing is Sister Yueqing to be my mother."
Tian Yueqing blushed and said, "I'm willing to cooperate, but you've overlooked the most important thing."
Tsubasa confidently stated, "Impossible. Science is rigorous; I've considered every aspect. How could I have overlooked such an important issue?"
Tian Yueqing smiled and said, "Have you considered your age?"
Tsubasa's confident expression froze, and he unconsciously touched his little bird. He realized he wasn't fully grown up yet; having spent so much time in the space, he had forgotten he was still a minor.