Tsubasa's combat plan for his disciples was simple and brutal: gauntlet battles! Group battles! Extreme challenges!
On the first day, Sasuke Uchiha faced off against the combined forces of Kakashi Hatake and Obito Uchiha.
" Kakashi-sensei, Obito -nii, watch out!" Sasuke's Rinnegan flashed as he looked at the two mentors who Sasuke guided him when he was young. The immortal sword in his hand, imbued with the intent of lightning punishment, slashed through the sky. It was no longer just simple lightning, but the prototype of the " True Art of the Divine Sword Wielding Thunder," which contained the law of destructive lightning.
Kakashi's swordsmanship Lightning Release became even more focused and unpredictable, Obito Uchiha's dual Kamui Dimension distortions were impossible to defend against. The three fought a dazzling display of lightning and spatial rifts. Ultimately, Sasuke, with his superior strength, understanding of the laws, and the power of his Rinnegan, suppressed both of them, but he himself was greatly exhausted and injured. If not for his overwhelming power, he would have been defeated. Both were masters of the art of combat; Kakashi had perfected the use of various minor Ninjutsu and tactics, while Obito Uchiha had mastered the Space-Time Ninjutsu.
On the other side, Naruto Uzumaki is facing both A Yotsuki and Killer B.
"Yo! You idiot! Watch out for my Acrobat!" Killer B rapped awkwardly, his Tailed Beast Chakra surging. A Yotsuki transformed into lightning, moving at astonishing speed.
Naruto let out a long roar, abandoning his simple Shadow Clone swarm tactic and incorporating the Wind Release techniques. Hundreds upon hundreds of Wind Release Shadow Clone, each imbued with tearing power, formed a massive array. Simultaneously, his main body unleashed the " Flying Thunder God: Rasenshuriken," Rasenshuriken left the two completely disoriented. The battle was incredibly fierce, but ultimately, Naruto easily defeated them with his superior spatial tactics and vast Senjutsu foundation.
Hinata Hyuga faces off against Mei Terumi and Tsunade.
The corrosive power of Boil Release and Lava Release, combined with Tsunade's monstrous strength, put immense pressure on Hinata. However, she combined the laws of the Xingchen with Gentle Fist, unleashing the " Eight Trigrams Xingchen Palm: Meteor Shower," which seemed to summon miniature Xingchen to fall. The power was condensed to its extreme, while the pressure of the Tenseigan interfered with her soul. With her exquisite application of the laws and powerful Soul Power, she gradually gained the upper hand.
The three constantly sparred with different types of experts, even fighting against Tenchu and Tian Yu, two Peak Golden Core cultivators. Their combat experience against these powerful opponents continued to grow.
Meanwhile, the other three junior disciples Rēji Senju, Xingchen, and Kirin Cat, faced various phantoms of powerful figures simulated by Tsubasa. All three grew extremely fast. Rēji Senju mastered Wood Release, which carried the meaning of life, death, and annihilation. It not only possessed powerful binding and attack capabilities, but the pollen it emitted also had the effect of corroding life force. Through battle, Rin'er comprehended higher-level Wood Release laws and the meaning of life and death.
Under conditions of ten or even a hundred times the gravity, Xingchen clashed head-on with various illusory Taijutsu! He had no fancy immortal Senjutsu, only punches and kicks, which contained the ultimate laws of force, elevating Taijutsu to the realm of art, and forcefully shattering countless illusions.
The Kirin Cat hone its wildness and innate supernatural abilities by battling phantom monsters in various environments.
Each of the nominal disciples also has a powerful opponent, fighting and struggling on the edge of life and death, and comprehending and breaking through.
Every day, the disciples were trained to the point of exhaustion and covered in wounds. But the top-quality healing pills and spiritual pools prepared by Tsubasa always allowed them to recover completely the next day, and they even made progress due to the extreme pressure.
In addition to actual combat training, Tsubasa has also opened the " Immortal King Scripture Repository ". It contains not only countless Ninjutsu scrolls (from D-rank to S-rank and even super S-rank), but also Sage Art, secret arts, supernatural powers and Taijutsu manuals that Tsubasa has personally improved or even created.
Examples include Tsubasa's " Jūni-Grade Golden Lotus Art " after he became Immortal King; the " All-Heavens Xingchen Body Tempering Art " created using the Eight Gates Released Formation and the Hyuga Clan's Mount Myōboku Limitless Sect; the " Limitless Divine Art " of the Wuji Sect of Mount Myōboku; the " Heaven-Reaching Rune Record " created for the Shikkotsu Forest as a sealing divine book; the improved " Flying Thunder God Advancement: Space Folding" by Tobirama Senju; and the "Immortal Technique: Divine Dragon Technique," " True Explanation of Sealing Formations," "True Explanation of Weapon Refining," " True Explanation of Alchemy of True Explanation of Artifact Refining Edition," and " Cooking God's Cookbook " from the Sage Art Ryūchi Cave Divine Dragon Sect, etc.
The disciples eagerly absorbed their various techniques. Sasuke Uchiha combined the Lightning Punishment Sword Intent with the sword control techniques of the Limitless Sect to create the " Purple Lightning Sword Art "; Naruto Uzumaki combined Wind Release, Space-Time Technique, and Multi Shadow Clone Technique to create the "Space-Time Infinite Shuriken Technique"; Hinata Hyuga combined the Xingchen Palm Technique with some ranged Sage Art to comprehend the " Xingchen Eight Trigrams Finger "; Rēji Senju began to try to cultivate the " Jūni-Grade Golden Lotus Art "; Xingchen found the " All-Heavens Xingchen Body Tempering Art " to cultivate, which is currently the highest method of body cultivation in the Shinobi World, and he treasured it like a precious gem; Kirin Cat also learned Ninjutsu and supernatural abilities such as size transformation and earth-burrowing invisibility.
Practice, learning, assimilation, and more practice... this cycle continued. The disciples accumulated combat experience at an alarming rate, their control over their own power became increasingly refined, and they could wield various Sage Art and Ninjutsu with ease, combining and using them with unparalleled skill. They gradually shed their childish genius and began to display the demeanor of true powerhouses.
Three years passed in the blink of an eye. (Three years in the outside world, during which the disciples also entered the " Setsuna Grotto-Heaven " many times to learn more profound knowledge, and nearly a hundred years passed in total inside.)
On this day, at the Immortal Venerable Academy, in the Refining Hall, beneath the enormous Qiankun Cauldron, earth fire surged, and within the cauldron, countless rays of light and auspicious colors shone, the powerful energy fluctuations triggering extraordinary phenomena in the heavens and earth.
Tsubasa hovered above the cauldron, his hands Hand Seals. Countless precious materials (such as Copper of Mount Shou, Xingchen iron, void crystals, and the essence of the five elements) were thrown into the cauldron and tempered with the fire of the Immortal King's origin, infusing them with profound runes and laws.
He wanted to personally forge protective immortal weapons for these disciples who had grown up!
" Sasuke Uchiha, take this sword!"
With a clear shout, a bolt of purple lightning shot out from the furnace and landed in Sasuke Uchiha. It was an ancient-looking longsword, its blade shimmering purple and wrapped with fine lightning patterns. At the hilt was a gem like the Rinnegan, radiating a sharp sword intent that could slay evil and break through laws—the Immortal Sword: Tianya (Lightning Attribute)!
" Naruto, this is yours!"
A flash of blue light appeared, and a seemingly simple short sword, with countless spatial runes flowing within its blade, flew towards Naruto —the Immortal Sword: Instantaneous Space (Wind, Space Attribute)! It perfectly matched his Space-Time Ninjutsu.
Hinata, this ring is for you.
A pair of jade rings, as bright as moonlight, flew out, their surfaces engraved with the Xingchen of the heavens. Inside each ring was a miniature space, capable of both offense and defense, and able to amplify the power of the Xingchen —the Immortal Artifact: Sun and Moon Essence Wheels (Yin, Space Attribute)!
" Rēji Senju, this staff is for you to use."
A vibrant green vine, embodying both vitality and solitude, fell to the ground, its tip adorned with a gleaming gem of life—the Immortal Staff: Ode to Ode to Life (Wood, Life and Death Attributes)!
" Xingchen, this set of gauntlets will help you break through the limits of martial arts!"
A pair of dark gold gauntlets and shin guards, covered with mysterious power patterns, flew out, incredibly heavy, and landed in Xingchen's hand, perfectly resonating with his ultimate power level - Immortal Weapon: Shaking the Mountain (Pure Power Amplification)!
"Little cat, is this bell nice?"
A small, purplish-gold bell jingled as it flew to the neck of the Kirin Cat. Its movement could summon wind, fire, and thunder, and it even possessed the power of a soul attack—the Immortal Artifact: Beast Taming Bell (All Attributes Amplified, Sound Attack)!
The disciples also gained something: Kageko Nara received a " Shadow-Evolving Immortal Chess Formation " (for deducing formations and trapping enemies); Tianling received a " Human Emperor Seal " (for amplifying dragon energy and suppressing fortune); Madara Uchiha (child) received a " Gunbai) " (for reflecting and amplifying Ninjutsu and Sage Art ); Mito Uzumaki (child) received a string of " Adamantine Prayer Beads " (for being extremely sturdy and amplifying seals); Haruko received a " Shrine Maiden Mirror " (for foreseeing the Mirai and purifying evil spirits).
Following that, Tsubasa crafted a set of immortal armor for each of them, with astonishing defensive capabilities and attributes that matched their respective immortal weapons and cultivation techniques.
Holding celestial weapons and clad in celestial armor, feeling the powerful force within them that resonated with their blood and the laws of the universe, the disciples were all incredibly excited and their confidence soared. With this, their equipment was completely upgraded, reaching an unprecedented level in the Shinobi World.
Three years of arduous training, resource accumulation, comprehension of laws, life-or-death combat, cultivation of Sage Art, divine weapons... all these accumulations have converged into a powerful force capable of shaking the entire Shinobi World!