Uchiha Puppet Master, Starting from One Piece

"This is my new understanding after hundreds of years. No matter how many styles of swordsmanship you learn, for a Shinigami, relying on the power of your Zanpakuto is your most powerful swordsmanship. Of course, there are other things you can learn as well."

As she spoke, she raised her hand and grasped the shallow sword at her side. Without drawing the sword, she simply raised her hand slightly and turned her wrist. The shallow sword then swept across her in a very gentle arc, without any sound of it cutting through the air or any sharp force.

But the three people on the deck clearly felt that the surrounding air was being pulled by an invisible force, flowing gently along the trajectory of the blade, and even the patterns of sunlight seemed to sway with it.

"The same applies to gait."

Unohana Retsu lightly lifted her foot and took a seemingly casual step, then silently moved three feet to the other side of the deck, landing on the wooden plank beneath her feet without making a sound.

"This is Shunpo, a technique that I can refine no matter what world I'm in."

Rangiku, who had just watched the two of them from the boat, felt a strong urge to try it herself. Hearing this, she quickly asked, "Hana-nee, how do you practice this Shunpo? You can't just walk around aimlessly, can you?"

Unohana Retsu chuckled: "This actually involves the use of spiritual power, which is very similar to the power of chakra used by Shiraha."

Unohana Retsu lightly flicked her fingertips, and a wisp of pale white spiritual pressure rose from her fingertips, flowing like tiny starlight in her palm. She looked up at Shiraha, her tone gentle yet clear: "Shiraha-kun should understand this best. Chakra is the fusion of physical and spiritual energy, while spiritual power is the energy of the soul itself. Although their origins are different, they are both processes of refining, guiding, and releasing the energy stored within the body. This is the core similarity."

She gently pushed the spiritual pressure in her palm into the air, and the wisp of spiritual energy transformed into a slender ribbon of light, slowly swirling around the three of them: "Chakra travels along the meridians, while spiritual power flows with the body's spiritual veins. Both require precise control; if you lose control, you will waste energy."

In fact, the core of Shunpo is to condense spiritual pressure in the soles of the feet, and use the burst of spiritual pressure and the attraction of spiritual particles to break through the speed limit of the physical body. This is actually very similar to the Shave technique in the One Piece world and the Body Flicker Technique in Naruto.

Of course, Uchiha Hakuba also knows the Body Flicker Technique from Naruto, but he uses chakra to activate his body for high-speed movement, rather than attaching chakra to the point of force application.

It is feasible to use chakra instead of spiritual pressure to activate Shunpo. If the chakra is sufficiently refined, it can form a brief energy support under the feet. By borrowing momentum and strength, this is the key to taking Shunpo in a non-soul state.

Of course, if one's body is strong enough, it is also possible to use Shave and Flash Step or Body Flicker Technique at the same time.

With a soft "thump," the deck was shaken by the explosive force of the chakra, leaving a fine crack.

Bai Yu's figure shot forward instantly, at a speed more than ten times faster than a normal sprint.

However, when he landed, he forgot to release the force. His left foot slammed heavily onto the deck, and the impact made him sway violently, almost falling forward. He only managed to steady himself by instinctively bracing his hands on the deck.

"The release of force was too hasty, and the burst of chakra was also off-target, making it impossible to achieve a state of effortless control."

Unohana Retsu's voice sounded beside him, her fingertips lightly touching the sole of his right foot.

"You concentrated your chakra in the center of your soles instead of your toes, which dissipated three-tenths of your explosive power. When you landed, you pulled the chakra back instead of letting it dissipate, so the impact could not be offset. Do it again, concentrate it in your toes, and when you land, let the chakra flow from your toes to your heels and slowly disperse into the deck."

Bai Yu nodded and gathered chakra again. This time, he deliberately concentrated the chakra at the toes of his feet, and the warm sensation landed precisely on a point on his toes, solid and not dissipated.

Once the power was fully charged, he lightly flicked his toes, unleashing the explosive force of his chakra, and his body glided out like an arrow released from a bow.

This time, he remembered Unohana Retsu's words. When he landed, his left toes touched the ground first. Chakra flowed slowly from his toes to his heels and then spread into the deck. The impact was completely neutralized, and he landed as steadily as a mountain.

"good!"

As Unohana spoke, she raised her hand to grasp the Asauchi at her side, lightly touching the scabbard to the ground, and glanced at the three of them: "Kendo and Shunpo are one. The unity of sword and footwork is the foundation of Shinigami swordsmanship. What I just taught you was Shunpo. Next, I will teach you the sword Zen of Shinigami, so that you can learn to use Asauchi and make it your own Zanpakuto."

"The asp of death is not a cold piece of iron, but another, unawakened version of yourself."

Unohana's voice was gentle: "After the Soul Society's Shinigami entered the Shinigami Academy, he accompanied Asauchi, nourished by spiritual pressure and communicating with him through his mind. One day, he awakened his true name and became a Zanpakuto."

As she spoke, she raised her hand to touch her Zanpakuto, a faint smile playing in her eyes: "Zen of the sword is not about sitting in meditation or closing your eyes to daydream. It is about using your soul as a pen, allowing your soul's power to merge and imprint itself with the Asauchi. The Asauchi is like a blank sheet of paper. You carve your obsessions, your power, and your true self into it. Over time, it will transform into a Zanpakuto that is uniquely yours, understanding your will and born according to your thoughts."

Bai Yu touched the shallowly cleaved hilt of the sword in his hand. A slightly cool sensation came from his palm, and he could feel the almost ethereal emptiness within the shallow cleavage.

The three then followed Ueno-hana's instructions, sitting cross-legged on the cool wooden deck and gently placing the asagi on their laps.

Only my mind and spirit remain in a state of deep depression.

Unohana Retsu walked slowly to the three of them. Her white haori fluttered gently in the sea breeze. She didn't say anything more, but simply paced gently beside them.

Unohana Retsu's voice rang out beside the three: "The key to sword Zen lies in sincerity and tranquility. Sincerity means being honest with Asauchi and with yourself, without harboring any distracting thoughts or concealing your true self. Tranquility means having a calm mind, not being disturbed by past victories or future obsessions. Only in this way can the imprint of the soul be deeply engraved in Asauchi, rather than just floating on the surface."

Retsu Unohana watched as the light shimmered with different colors on the three knees, and a hint of approval flashed in her eyes.

These three people did indeed learn very quickly.

"Very good, you have all established the initial connection with Asauchi, but this is only the beginning. The training of sword Zen is not something that can be accomplished overnight, but rather requires daily companionship and constant communication."

"From now on, this light weapon must never leave your side. It must accompany you in eating, resting, cultivating, and fighting. Gradually engrave your intentions and your power into it, so that it becomes familiar with your soul and adapts to your power, until its soul and your soul are completely integrated and inseparable."

"When the asada fully accepts your soul imprint, it will gradually awaken its own form under the nourishment of your soul and heart."