Kurosawa sat on the hospital bed, his body slowly recovering from the bruises and exhaustion of the battle with the chakra-enhanced boar. His eyes focused on the palm of his hand, imagining the flow of chakra he could now control more precisely. The metal sword rested beside him, the **Palm of Wind** still fresh in his memory, a promise of new possibilities.
As he observed, thoughts arose in his mind, meticulous and critical, analyzing every aspect of the jutsu he had learned and how it fit into the **general classification of jutsus**.
*Rank E…* he thought. "The most basic and simple chakra manipulation. Usually only moving chakra outside the body to create illusionary clones or superficially alter appearance. It's the starting point, the minimum expected of a ninja." He remembered the first time he managed to create an illusion clone — a simple technique, yet it required all his care and precision. For an ordinary person, just controlling chakra outside the body would already be challenging. For him, it was just the beginning of a long journey.
*Rank D…* he continued mentally. "Jutsus that start to use chakra more efficiently. Usually techniques involving the whole body, using chakra as a supernatural boost. Control begins to have direct consequences in the physical world. For example, strengthening a strike, increasing speed, or creating small energy projections."
Ren closed his eyes, feeling the flow of energy through his body. He imagined each technique, each possible use, and how he could train to consistently improve.
*Rank C…* he breathed deeply, feeling the importance of this stage. "Here begins true ninjutsu. Elemental manipulation, transforming chakra into energy or matter. These are the first techniques that can really change the environment or create concrete attacks." He thought of his **Palm of Wind**. Though basic, it already qualified as Rank C, indicating that with training and refinement, it could become a powerful tool — even if, for now, it could only drive a shuriken deeper into a tree or precisely deflect small leaves.
*Rank B…* he continued his analysis. "Refinement of Rank C techniques and manipulation of chakra shape. Here one learns to direct, concentrate, and mold chakra in more complex ways, making jutsus more efficient and controllable." He imagined developing his Palm of Wind to create concentrated blasts or combining it with his metal sword in combat.
*Rank A…* he thought, feeling a shiver of respect for what came next. "Extreme manipulation of chakra form. Techniques like Rasengan, or the use of chakra nature change on a small scale to enhance jutsus. Here, the body, mind, and chakra become one, and only those with exceptional control can master it."
*Rank S…* his thoughts grew darker and more reverent. "From this point, only techniques using extreme chakra form control, strong chakra nature modifications, and even minor mysteries of the world. Jutsus like Hiraishin — instant teleportation — are included at this level. These abilities are rare, requiring near-superhuman precision and deep understanding of chakra."
Finally, the forbidden jutsus… Ren breathed slowly, his heart slightly racing. "Deep manipulations of the world, the soul, and the body. Resurrection, intense control of the organism, techniques that seriously damage the user, like the Eight Gates. And, of course, Kekkei Genkai, hereditary abilities that defy normal chakra rules. These are the limits only a few dared to explore — and many who tried paid dearly for it."
As he reflected, Ren realized something important: **two different people can achieve completely different results with the same jutsu**. Each ninja imparts their skill, experience, perception, and life force into the technique; the same jutsu can be deadly in the hands of a master or ineffective in the hands of a beginner.
He opened his eyes and looked at the palm of his hand again, the chakra flow still perceptible in his mind. "This means everything depends on me… how I train, the discipline I maintain, and the analysis of each movement. The jutsu itself is just a tool. The real difference lies in who uses it."
Ren sighed, feeling the weight of responsibility and opportunity. Each jutsu, each rank, each technique was more than learning: it was **an extension of his own ability to shape the world around him**. And he understood that, even as a child, each step of training, each careful action, and each strategy would define his future in this world.
He began mentally planning his next training, imagining how to advance his Rank E and C techniques, improve his endurance, integrate his metal sword and the Palm of Wind, and prepare for early entry into the academy. It was more than training: it was **a slow and precise construction of power, perception, and control** — laying the foundation for a future that, now more than ever, would depend on his own mind and determination.