Naruto: So I Refined the Nine-Tails at Five. Are You Shook, Sage of Six Paths?

[Naruto Fanfiction + No System + Self-Created Cultivation System + Hardcore Deduction + Slow-Burn Power Fantasy + No Darkness, No Following Canon] Liu Bo, a corporate drone hit by a dump truck, transmigrated into the body of five-year-old Uzumaki Naruto. On his very first day, he shouted "System, come out!" over a hundred times—and got nothing. No check-ins. No simulator. No cheat ability. Not even the basic transmigrator treatment? But as a veteran fan who'd watched Naruto dozens of times, he knew one thing better than anyone: Chakra wasn't power—it was a virus. The Divine Tree absorbed natural energy and converted it into chakra. Kaguya ate the fruit and became the "virus host." Hagoromo founded Ninshū and spread the virus to all of humanity. Every ninja was a "chakra ATM," trading physical and mental energy for temporary access to power—and the source could recall it all with a single click. Even more terrifying: Hagoromo probably wasn't dead. He was just watching everyone perform from behind the scenes. After figuring all this out, Naruto made a decision—I'm not practicing chakra. He dug up Daoist breathing techniques and nine-orifices cultivation methods he'd read about online in his past life, and began blazing an unprecedented path in the Naruto world: Absorbing the spiritual energy of heaven and earth, opening the nine orifices, unblocking the Governing and Conception Vessels, and forging an inner universe within himself. From that point on, Naruto's path was completely transformed: Enlightenment through fishing: While fishing by the river, his consciousness sank to the riverbed and unexpectedly captured his first wisp of spiritual energy—the moment it drilled into his dantian, he knew he'd bet on the right horse. Abdominal breathing method: With each breath, he automatically absorbed spiritual energy. Focusing on his dantian boosted efficiency six to nine times. From then on, he cultivated while walking, while sleeping—24/7, never stopping. Breaking through three barriers to open nine orifices: Lower dantian, middle dantian, upper dantian—each orifice he broke through skyrocketed his power. Spiritual energy surged into his fists—one punch drilled through a tree three men could barely wrap their arms around. At six years old, he could sprint at 70 kilometers per hour for a hundred kilometers without slowing down. Refining the Nine-Tails: The moment he broke through the Middle Palace orifice, the seal space turned upside down. Kurama's fur stood on end: "What did you do?!" Naruto smiled faintly: "Kurama, let's make a deal." Feeding spiritual energy to Kurama, he evolved the chakra-based Nine-Tails into a spiritual-energy Nine-Tails—from then on, Kurama was no longer a sealed prisoner, but his infinite fast-charging power bank. Lost in the void: Deep within the Middle Palace orifice lay an endless void. He got lost there for what felt like centuries, hearing ancient chants from time immemorial—the voice didn't belong to Kurama, nor to Hagoromo. It seemed to come from something even older than Kaguya... Kurama: "This spiritual energy... is a hundred times purer than chakra. It embraces all things, nurtures all things, and holds infinite possibilities." Third Hokage (staring at the crystal ball showing Naruto building a snowman, tears streaming down his aged face): "This child... is just like his father." Mitokado Homura: "Can't even master the basic curriculum after six years?" Naruto internally: Old hag, you can't even comprehend what I'm cultivating. Hagoromo (in a corner known to no one): "This child... he isn't using chakra? How interesting." "My name is Uzumaki Naruto. I don't practice chakra. I don't make hand seals. I don't use ninjutsu. My hobbies are sitting in meditation, seeking enlightenment while fishing, feeding Kurama spiritual energy, secretly opening nine orifices on the Hokage Rock, and... dragging Hagoromo out from behind the scenes." This is the hardcore story of a transmigrator with no system, no cheat—armed only with memories from his past life and Daoist cultivation methods—blazing a path beyond chakra in the Naruto world, stepping toward a realm above Hagoromo himself, and uncovering the deepest truths of the ninja world, starting from age five. Chakra is borrowed power—it will be reclaimed one day. But spiritual energy? It's a gift from heaven and earth itself. No one can take it away.