Onmyoji of the Grand Line

The Straw Hat crew felt a mixture of surprise and fear upon seeing the changes in Seimei's body.

“What’s going on?” Usopp asked.

“It seems that his Yin-Yang Vortex Technique is not simply about controlling Yin and Yang forces,” Robin said. “It’s as if he has integrated Yin and Yang forces into his body.”

"This guy is terrifying!" Usopp's face turned pale.

"We (ccaf) must stop him!" Luffy said fearlessly. "We can't let him continue to wreak havoc."

The Straw Hat Pirates launched an attack, attempting to stop Seimei's actions. However, Seimei's power was too great; he easily dodged the Straw Hat Pirates' attacks while simultaneously launching his own.

The Straw Hat crew gradually realized their lack of strength and began to find themselves in a passive state.

"We must unite to have any chance of defeating him!" Zoro shouted.

Upon hearing Zoro's appeal, the Straw Hat crew began to unite, attempting to work together to defeat Seimei.

After a fierce battle, the Straw Hat crew finally discovered Seimei's weakness.

"His defense is strong, but his attack power is insufficient," Zoro shouted. "We need to disrupt his rhythm with rapid attacks and prevent him from using the Yin-Yang Vortex Technique."

Hearing Zoro's suggestion, the Straw Hat crew began to use a faster attack method in an attempt to disrupt Seimei's rhythm.

Seimei felt his rhythm being disrupted and began to become somewhat agitated.

“This guy seems to be starting to panic,” Usopp laughed.

The Straw Hat crew continued their attack, and Seimei began to dodge constantly, but his body seemed to be showing signs of fatigue.

"Now is the time!" Luffy shouted.

He began to concentrate all his strength, preparing for his strongest attack.

Chapter 357: Combination of Yin and Yang Techniques!

The Straw Hat crew also concentrated all their efforts and launched an attack together.

Seimei felt immense pressure, and he began to waver.

However, he did not give up; instead, he launched his own attack.

The Straw Hat Pirates and Seimei engaged in a fierce sparring match, with neither side backing down. In the end, the Straw Hat Pirates finally won the match.

“You guys are a remarkable bunch,” Seimei said breathlessly. “I’ve learned a lot from you.”

The Straw Hat crew was somewhat surprised to hear this.

“We don’t want to defeat you,” Luffy said. “We just want to prove our strength and hope that you can agree with our values.”

Upon hearing this, Seimei smiled and nodded.

“I understand. You are a group of people with faith and ideals,” he said. “I am also honored to have the opportunity to learn from you. Thank you.”

The Straw Hat Pirates and Seimei shook hands, respecting each other's strength and beliefs.

After sparring with the Straw Hat Pirates, Seimei felt he had gained a deeper understanding of his own strength and discovered that his Onmyojutsu still had much room for improvement. He decided to find someone who could help him master a deeper level of Onmyojutsu.

He thought of Nami from the Straw Hat crew, who was said to be skilled in controlling the weather, which might be related to Yin-Yang magic. So, he decided to go and ask Nami for advice.

Upon arriving at the Straw Hat Pirates' ship, Seimei found Nami studying weather charts. He walked over to her and greeted her with a smile.

"Hello, Miss Nami, I am Seimei, an Onmyoji."

Nami looked up and saw Seimei. She was somewhat surprised, because she knew that Seimei had once fought a fierce battle with the Straw Hat Pirates. However, she still smiled and responded to his greeting.

"Hello, Mr. Seimei. May I ask what's the matter?"

Seimei explained his purpose for coming, expressing his hope to learn from Nami about Yin-Yang techniques and weather control.

Nami thought about it and found it to be an interesting suggestion. She readily agreed and began to introduce the basics of weather control to Seimei.

Seimei quickly mastered the knowledge taught by Nami, and he felt that it was closely related to Yin-Yang techniques, so he began to study it in conjunction with his own Yin-Yang techniques.

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“Miss Nami, I have an idea,” Seimei said. “I want to combine my Yin-Yang techniques to control the weather. Would you be willing to try it with me?”

Nami was thrilled; she had never imagined combining weather control with Yin-Yang magic. She nodded, indicating her strong willingness to participate.

....... .. ...

So, Seimei began to explain his ideas to Nami. He explained that there was a very profound relationship between weather and yin and yang, and that the Yin-Yang Vortex Technique could help her better control the weather.

Nami listened very attentively. She found Seimei's ideas very reasonable and also sensed his profound mastery of Yin-Yang techniques. Therefore, she began to study the combination of weather control and Yin-Yang techniques with Seimei.

They spent a long time conducting numerous experiments and research. Seimei used Yin-Yang Vortex Technique to control the weather, while Nami used her Weather Stick for weather control. Together, they discovered the connection between weather control and Yin-Yang Technique, uncovering many new applications and techniques.

Chapter 358: The Yin-Yang Vortex Technique is truly powerful!

During this process, Seimei also introduced his Heavenly Star Slash technique to Nami. He told Nami that this technique could help her better control the weather and make her weather stick more powerful.

Nami was very grateful for Seimei's help and was also fascinated by his Heavenly Star Slash technique. She decided to learn this technique and hoped to apply it to her weather control.

Thus, Seimei and "723" Nami began a heated sparring match. They set up a training ground on the coast, practicing their skills and engaging in duels together. Seimei used his Heavenly Star Slash to control the weather, while Nami used her Weather Stick to control the weather.

The sparring between the two was intense yet incredibly enjoyable. Seimei taught Nami a great deal about Onmyoji techniques, while Nami demonstrated her weather control skills to Seimei. Their skills improved continuously, deepening their friendship and understanding.

During their sparring session, Seimei also discovered Nami's shining qualities. He realized that Nami was not an ordinary girl; she possessed an exceptionally strong will and abilities. He decided to become her friend and offer her help and support.

“Nami, you are really amazing,” Seimei said. “I think your weather control skills can play a greater role, and I can help you achieve that goal.”

Nami was overjoyed and grateful upon hearing Seimei's words. She felt she had finally found a partner to fight alongside. Therefore, she decided to work with Seimei to perfect the combination of weather control and Yin-Yang techniques.

They engaged in a fierce sparring match at the seaside training ground. Nami wielded a weather stick, while Seimei held a longsword, constantly switching between offense and defense.

Seimei used the Yin-Yang Vortex Technique to control the weather, making Nami's weather stick even more powerful. Nami, in turn, used the Heavenly Star Slash technique taught to her by Seimei to make her weather control more precise and effective.

Their sparring was fierce, stirring up the surrounding seawater and making the sea breeze even more violent. However, neither of them backed down, but continued to improve through their exchanges.

“Your Yin-Yang Vortex Technique is really amazing…” Nami said breathlessly. “I think we can really work together to push weather control and Yin-Yang techniques to their limits.”

“That’s right, we can definitely do it if we work together,” Seimei replied.

The sparring match between Seimei and Nami attracted a lot of attention, including Usopp. He was amazed and full of admiration as he watched Seimei's Yin-Yang Vortex Technique and Nami's weather control skills. He knew that his marksmanship skills still had a lot of room for improvement and hoped to get Seimei's help.

"Brother Seimei, could you help me?" Usopp asked Seimei. "I want to improve my marksman skills."

Seimei nodded, indicating his willingness to help Usopp. He introduced Usopp to his Ghostly Arrow Technique, a unique skill that combines gathering energy with shooting. He told Usopp that the Ghostly Arrow Technique could help him master more accurate shooting skills and also enhance the power of his shots.

Usopp listened intently, knowing this was a rare opportunity. He began training with Seimei in the Ghostly Arrow Technique, learning this extraordinary skill step by step.

Chapter 359: Netherworld Ghost Arrow Technique!

Under Seimei's guidance, Usopp quickly mastered the essence of the Ghostly Arrow Technique. His shooting skills became more accurate, and its power also increased significantly.

They engaged in a fierce sparring match at the seaside training grounds. Usopp wielded his divine spear, while Seimei countered with his Ghostly Arrow Technique.

"I'll show you my true power after mastering the Ghost Arrow Technique!" Usopp shouted.

He suddenly leaped up, his spear flying towards Seimei. Seimei dodged, but Usopp's spear changed direction mid-flight, chasing after Seimei.

Seimei's eyes narrowed; he knew Usopp was trying to use the technique he had taught him. He extended his finger, condensing a stream of black energy, and then gently tapped it, launching a ghostly arrow towards Usopp.

Usopp saw the ghostly arrows coming and tried to dodge, but the arrows seemed to have their own will, relentlessly pursuing him. He kept changing direction and speed, but the arrows always managed to whiz past him, making him very panicked.

"That's an amazing technique!" Usopp thought to himself in amazement.

He finally found a secluded spot to avoid the pursuit of the Netherworld Arrows. But just then, Seimei suddenly appeared beside him.

“It seems you’ve mastered it quite well,” Seimei said with a smile. “However, there are still many more techniques and variations in the Netherworld Ghost Arrow Technique.”

He began to introduce Usopp to the deeper levels of the Ghost Arrow Technique, teaching him how to use the trajectory and energy of arrows to make more precise and efficient attacks.

Usopp listened attentively, learning these techniques through practice. His marksmanship improved steadily, and the power of his Ghost Arrow technique grew stronger and stronger.

They sparred many times by the sea, with Usopp constantly trying new techniques and variations, while Seimei helped Usopp refine his skills through continuous guidance and reminders. Their sparring became increasingly intense and skillful.

During a sparring match, Usopp suddenly discovered that his marksmanship had reached a new level. Wielding his spear and employing the Ghost Arrow Technique, every arrow struck its target with pinpoint accuracy. He felt a qualitative leap in his strength and abilities.

Seimei was also very pleased and satisfied, knowing that his teachings and guidance had played a very important role. He decided to demonstrate his strength to Usopp once again to encourage Usopp to continue striving to improve his skills.

“Usopp, you’ve done exceptionally well,” Seimei said. “Now, let me show you the true power of my Onmyojutsu!”

He stood up, gripped his longsword with both hands, and a ball of black energy began to gather around his body. He took a deep breath and then fired a black energy wave at Usopp.

Usopp couldn't dodge in time and was hit by the energy wave, his body thrown back. He landed on the beach, rolled a few times, and then struggled to his feet.

"That's amazing!" Usopp exclaimed. "I'll work even harder to improve my skills and become a true sharpshooter!"

Seimei smiled and nodded, indicating his satisfaction with Usopp's performance. He knew this was just the beginning.

Chapter 360: The Yin-Yang Technique of Heaven and Earth!