Deep within the Valley of the End, at the Immortal Venerable Academy, the magnificent palace complex exudes a misty Spiritual Qi in the morning light, resembling a fairyland. Before the exhilarating atmosphere of the opening ceremony had completely dissipated, Tsubasa began special training for his personal and nominal disciples.
Without lengthy theoretical lectures, Tsubasa directly led his eleven disciples (five personal disciples, five registered disciples, and Kirin Cat ) to the most core forbidden area of the academy—an ancient altar inscribed with countless complex runes that flowed with temporal and spatial fluctuations.
"Wow, is this the ' Setsuna Grotto-Heaven ' that the teacher mentioned?" Naruto Uzumaki looked around curiously, and the Kurama within him (a Chakra consciousness) stirred, conveying a solemn emotion. "Kid, the spacetime fluctuations here... are terrifying, far surpassing any known Space-Time Ninjutsu."
Sasuke Uchiha's Rinnegan rippled slightly as he attempted to analyze the runes, but he only felt dizzy, as if he were peering into the very origin of the universe. He quickly closed his eyes and said in a deep voice, "Don't use your eye power to observe so easily; the levels are too different."
Tsubasa looked at the group of young faces, including even Madara Uchiha and Mito Uzumaki, two "old cucumbers painted green"—though they now appeared to be only five or six years old, the vicissitudes in their eyes were undeniable. He smiled slightly, "This place is the ' Setsuna Grotto-Heaven,' a spacetime I constructed using the laws of the Immortal King combined with the power of the Shinobi World's origin. One day outside is equivalent to ten years inside."
"One day... ten years?!" Everyone gasped, including Master Madara and Mito, who had been reborn. What did this mean? It meant they had virtually unlimited time to study!
"The power of rules is profound and mysterious, not something that can be comprehended overnight. Basic knowledge, energy theory, array runes, elixirs and herbs, the evolution of Senjutsu... these things that require time to accumulate will be resolved here." Tsubasa waved his sleeve, and the altar shone brightly, forming a distorted spatial portal. "Go in. Inside, I have placed all the books, scrolls, and jade slips I have collected from the Shinobi World and even from beyond the realm, encompassing everything. You have three days outside, which is thirty years inside, to learn, to understand, and to memorize. Thirty years later, I will examine your progress."
Without hesitation, eleven figures, including the Kirin Cat that was curiously sniffing the spatial fluctuations, stepped into the portal one after another.
As the light faded, the group found themselves in a strange world. The sky was filled with flowing runes, the earth with solidified energy, and the mountains and rivers were all manifestations of pure laws. In the distance, a majestic library stood tall, its bookshelves reaching into the clouds, stretching as far as the eye could see. Countless scrolls, books, and jade slips were displayed on it, exuding an ancient and wise aura.
"Thirty... thirty years? So many books?" Hinata Hyuga felt dizzy looking at the vast sea of books. Her Tenseigan could clearly "see" that each book contained a great deal of knowledge.
Rēji Senju, on the other hand, was eager to try. Inheriting her grandfather's cells, she was full of energy. "Great! This is a perfect opportunity to research how to integrate other Chakra Nature Transformation into Wood Release!"
Xingchen, this six-year-old commoner genius, was so excited that his little face turned red. He came from an ordinary background and had never seen such a treasure trove of knowledge before. "I must learn all the Taijutsu and power techniques!" he clenched his little fist.
Kageko Nara adjusted his non-existent glasses (a habitual gesture) and calmly analyzed, "The time is long, but the amount of knowledge is enormous. We need to develop a study plan, work in groups, and improve efficiency."
Tianling, Tsubasa's great-grandson, nodded in agreement, carrying a hint of royal pride. " Kageko Nara is right. Don't bite off more than you can chew."
Madara Uchiha (currently a six-year-old child) snorted coldly. Although he was unhappy that he was only a nominal disciple, he would never miss such an opportunity. He headed directly towards the area marked " Yin-Yang Release " and "Secrets of the Rinnegan," determined to quickly regain and even surpass the power of his previous life.
Mito Uzumaki (currently a five-year-old girl) smiled gently and walked towards the areas of "Complete Guide to Sealing Jutsu " and "Life Force Cultivation," her goal was clear.
Haruko, the last shrine maiden, was more interested in the secret history of the Land of Demons and knowledge of the spiritual realm.
With a meow, the Kirin Cat darted toward the bookshelves containing "Beast Body Tempering " and "Essentials of Transformation".
Naruto Uzumaki and Sasuke Uchiha exchanged a glance and tacitly split up. Naruto focused on " Wind Release: Ultimate," "Space-Time Theory," and " Talk no Jutsu... uh, the Art of Communication? (his own addition)," while Sasuke concentrated on " Fire Style: Origin," " Dōjutsu Development," and " Indra's Secret Techniques."
The days of study were tedious yet fulfilling. Under this sky where there was no alternation of day and night, only the flow of runes, the eleven disciples absorbed knowledge day and night. When they were hungry, they ate the spiritual fruits that grew in the cave; when they were thirsty, they drank the spring water of the law; when they were tired, they meditated and regulated their breathing, replacing sleep with cultivation.
Initially, progress was slow. Many profound theories, such as multidimensional space folding, energy microscopic particle theory, and string theory, left them bewildered. Even Madara and Mito found it incredibly difficult to grasp this knowledge that transcended the old Shinobi World world system.
"Damn it! What the hell is this 'application of quantum entanglement in Senjutsu Mode communication'?!" Naruto wailed in pain, clutching his blond hair.
Sasuke frowned and remained silent, observing the "interference effect between the Rinnegan and higher-dimensional vision."
Xingchen was completely baffled by the "resonance principle between the Eight Gates Released Formation of the Human Body and the Pulse of the Xingchen ".
At this point, the benefits of teamwork become apparent. Kageko Nara's powerful logical reasoning and inductive abilities often break down complex problems; Hinata Hyuga's Byakugan and Tenseigan allow her to directly "see" the flow of energy and rules, providing empirical evidence; Rēji Senju's affinity for Natural Energy helps her understand many abstract concepts; even the Kirin Cat, with its demon beast instincts, has unique insights into certain obscure Body Tempering methods.
They discussed, debated, and even physically clashed over differing opinions, sparking flashes of wisdom in their exchanges.
One year, two years, five years... Time slips away quietly.
Naruto no longer struggled with spatial theories, instead coming up with ingenious ideas that even surprised the Kageko; Sasuke gained a deeper understanding of the Rinnegan and even began to deduce the prototype of his own Dōjutsu; Hinata's " Eight Trigrams Xingchen Palm " theory was greatly improved, incorporating the laws of Xingchen movement; Rin'er's " Senjutsu Wood Release " began to attempt to fuse with "Sprouts of Laws" of other attributes; Xingchen finally understood the relationship between Xingchen pulses and the human body's treasures, reaching the Grandmaster level in Taijutsu theory; Madara and Mito, relying on their past life experiences and combining new knowledge, made rapid progress by drawing inferences from one instance to another; the Kageko designed a more efficient Spirit Gathering Array; Tianling had new ideas for the use of Imperial Dragon Qi; Haruko initially mastered the combination of priestess power and Senjutsu; the Kirin Cat's transformation became more perfect, and its aura became increasingly profound.
Ten years, twenty years, thirty years...
Just three days had passed in the outside world, and the thirty years within the cave had come to an end. The gate of light opened again, and Tsubasa's figure appeared at the entrance.
Eleven figures raised their heads from the sea of books, their eyes now different. No longer filled with the curiosity, excitement, or confusion of their initial arrival, but brimming with the light of wisdom, a composure and profundity refined over the long years. Although their appearances remained unchanged due to the rules of the cave (preventing the aging of the physical body due to the passage of time), their temperament had been completely transformed.
"Time's up, come out." Tsubasa's voice came calmly.
Following instructions, the group stepped out of the portal and returned to the altar. The outside world was bathed in bright sunlight, and it seemed as if only a moment had passed, but their minds were filled with thirty years of accumulated knowledge.
Tsubasa glanced over and nodded slightly. "Not bad, the foundation is established. Next, it's time to improve your cultivation."