Ryujin Jakka became a teacher?

Ace shook his head and said, "No, I don't feel any discomfort in my body."

"This? How did they do that?" Marco's eyes were filled with astonishment, but he managed to suppress the urge to ask.

After a brief moment of shock, all the Whitebeard Pirates members cheered!

"Ace, are you really alright? You really possess the abilities of two Devil Fruits at the same time?" Marco asked again, his eyes filled with incredible joy.

Ace nodded, his expression a mixture of shock and joy. "Yes, Marco, I feel full of power. This Devil Fruit doesn't conflict with my Flame-Flame Fruit; on the contrary, they seem to complement each other."

Upon hearing the news, the surrounding crew members rushed over, eager to congratulate Ace. They knew that Ace, possessing the abilities of two Devil Fruits, would further enhance the Whitebeard Pirates' strength.

"This is truly incredible!" Marco exclaimed. "Perhaps this is a blessing from your father in heaven."

Haku rolled her eyes and said, "This is the power I gave to Ace, how did you come up with it as Whitebeard giving it to him?"

Haku turned to Ace again and said, "Although I gave you the power of the Tremor-Tremor Fruit, your strength still doesn't reach the level of Top-Tier Powerhouse."

When Haku said those words, everyone else felt as if they had been instantly struck down.

Because Haku's strength and status allow her to say such a thing!

Ace immediately objected upon hearing this. "Am I not powerful enough with the Tremor-Tremor Fruit and the Flame-Flame Fruit combined?"

Haku gave Ace a disdainful look and said, "My foolish little brother! If you continue to rely on your Devil Fruit ability, I can assure you, you'll never reach the level of Top-Tier Powerhouse!"

"If you still hold onto those old ideas, I can tell you with certainty: you should disband the Whitebeard Pirates as soon as possible!"

Seeing Ace's defiant gaze, Haku unleashed his Conqueror's Haki, suppressing everyone present, and said, "As the Son of the Pirate King, you also possess the qualities of a king! Yet, you haven't even Awakening Conqueror's Haki yet!"

"Similarly, you haven't mastered Armament Haki to the highest level either! You should know that one of your enemies Kaido, the captain of the Beasts Pirates, is an expert in this area. I think if the two of you were to fight, you probably wouldn't even be able to break through his defenses!"

Haku's Conqueror's Haki has been honed to a very high level. Although it hasn't reached the near-perfect level of the Four Emperors like Red Shanks, it's still enough to easily suppress most of the Pirates present.

Faced with this reality, Ace's ambition to take flight after just gaining the Devil Fruit ability the Tremor-Tremor Fruit was crushed by Haku.

Haku continued, "You also possess a Logia Devil Fruit- type Devil Fruit ability, which is widely recognized as the strongest of the three types! But in my eyes, you've almost ruined it!"

Haku's words were like a sharp sword, piercing Ace's sore spot. He clenched his fists, veins bulging on his forehead, clearly trying his best to control his emotions.

"Haku, you're right." Ace took a deep breath, finally calming down. "I've relied too much on my Devil Fruit ability and neglected to improve my own strength."

"In the world of Pirates, strength reigns supreme; Devil Fruit ability are merely supplementary." Haku withdrew her Conqueror's Haki and continued, "You possess extraordinary talent and potential, but if you don't diligently cultivate and train, all of that will be meaningless."

"I... I understand," Ace said dejectedly.

Haku looked at Ace speechlessly, then couldn't help but give Ace a flick on the forehead, saying, "Honestly, Luffy is way better than you mentally. That brat can always pick himself up and become even stronger after a setback."

"Look at you, just a small setback and you're about to collapse!" Haku said to Ace with exasperation.

Diamond Jozu approached Marco hesitantly and said, "I feel something's off about Haku training Ace. Should we stop this?"

Marco leaned back leisurely and said, "I think this is fine. Have you forgotten that Haku is also Ace's brother? This is their family matter. Why should we get involved?"

"Aren't you afraid this kid will teach you a lesson too?" Marco glanced at Jozu and said.

Jozu imagined the scene and fell silent.

Although Jozu didn't say it aloud, Marco could sense his worry. He smiled, gently patted Jozu's shoulder, and comforted him, "Don't worry, Haku knows what he's doing. His strictness towards Ace is actually because he wants him to become stronger so he can carry on Father's last wish."

As the two were talking, Ace had already rallied.

Haku then tossed a Zanpakuto with a Purple Scabbard to Ace, gazing at the Zanpakuto fear into the hearts of all Pirates.

Before Ace could speak, Haku said, "From now on, Ryujin Jakka will be your teacher. He will teach you how to use fire for the foreseeable future!"

"No, how can you teach me with just a knife?" Ace asked, his eyes wide.

Haku didn't bother to answer; instead, he said, "Muramasa, get to work!"

"Yes!" A figure appeared behind Ace.

To everyone's astonishment, the Ryujin Jakka in Ace's hand transformed into a person.

Although this situation had already been witnessed during the Marineford War, this peculiar ability still surprised many.

Ryujin Jakka patted Ace on the shoulder with a smile and said, "Kid, from now on I'll guide you on how to better utilize your fire abilities."

When Ace saw Ryujin Jakka, the Flame -Flame-Flame Fruit within him immediately felt a suppression from a superior.

Of course, that's normal! Ryujin Jakka Koby the Flame-Flame Fruit.

In Haku's view, as the strongest Zanpakuto among Flame-Type swords, it was more than enough to teach and develop the Flame-Flame Devil Fruit ability.

As for improvements in other areas, Haku adopted a hands-off approach.

It's important to understand that a person's strength isn't something that can be achieved through instruction alone; to truly become strong, one must prove themselves through hard work and self-reliance!

Basically, Haku has handled enough of things here.

Haku said, "Luffy is about to set sail again after two years of training. As his older brother, I hope you won't fall behind him!"

After saying that, Haku disappeared from Sea Swallow Island!