One Piece : Marine of the Straw Hat Pirates

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Luffy was working hard to infuse his will into his fists. His prior training in Ryuma helped him discover the existence of Haki more quickly. Soon, he could sense the Armament Haki in his body. While he still couldn’t harden it, it was enough to strike a Logia user’s body.

With Kuina’s guidance, Zoro also felt the presence of Haki, though wrapping it around his sword was proving a bit difficult. Kuina, on the other hand, could control her Haki independently. Seeing that Kuina had mastered it so easily made Zoro, who had always lost to her in the past, feel dissatisfied. He couldn’t believe he was still inferior to her.

"Zoro, don’t be discouraged! I’m already dead, so it’s easy for me to control my will," Kuina’s voice rang out in Zoro’s mind.

"I’m not discouraged. I just feel like I’m too reliant on you now," Zoro replied. As he spoke, he returned Kuina’s sword to its scabbard and put it next to him. He was determined to master Armament Haki without her help. Since he had already felt Haki’s presence, it was only a matter of time before he could wrap it around his swords.

The more challenging cases were Sanji and Chopper. They hadn’t even sensed the presence of Haki yet, much less been able to entangle it. 𝐟𝕣𝗲𝕖𝕨𝗲𝐛𝗻𝗼𝐯𝗲𝚕.𝗰𝚘𝐦

While the Straw Hats practiced their Haki, Wyper was already in a heated battle with Enel. Because of the anti-Enel badge, Enel’s lightning was completely useless against Wyper. Instead, the Sea-Stone and Impact Dial in Wyper’s hand were deadly weapons against Enel.

Enel had just dodged a strike, and if it weren’t for his electro-therapy, which could restore his heartbeat, he would have been defeated. Enel knew his electricity couldn’t hurt Wyper. While his physical combat ability wasn’t as strong as his Devil Fruit’s, he had another advantage—Mantra, which is the Skypiean term for Observation Haki. Using it, Enel became more comfortable in the fight and slowly gained the upper hand.

Kakashi, who was watching the battle and ready to intervene, immediately made a hand seal. A wall of earth in the shape of a dog’s head appeared between Enel and Wyper.

"Alright, Wyper, it’s time for the next one!" Kakashi called out. Wyper nodded and left the battlefield.

Enel was furious. "You people from the Blue Sea... are insulting a God! I am a God!" In a fit of rage, Enel transformed into his 200 million-volt form and unleashed a devastating lightning strike that temporarily blinded everyone. When the lightning dissipated, Enel, panting, put his hands on his knees. "Hah! There’s nothing left! That’s what happens when you mess with a God."

As the smoke cleared, Enel’s eyes widened in disbelief. "How is this possible? That was 200 million volts, my strongest attack before Ragnarok..." What he saw was Captain America, covered in lightning, holding Mjolnir in his hand.

"Hey," Captain America said to Enel, "didn’t that attack just drain a lot of your energy?"

Enel said nothing, still staring stupidly. Captain America didn’t hesitate. He swung his hammer and sent all the lightning Enel had just released right back at him. Enel, a user of the Rumble-Rumble Fruit, could absorb electricity to replenish his physical strength. As the lightning poured into his body, he came back to his senses.

"You... you... you’re bullying a God too much!" Enel was on the verge of tears.

"Okay," Kakashi said, kicking Enel in the rear. "Get back to work once you’ve recovered your strength! Luffy, you’re next!"

"I’m coming, I’m coming!" Luffy, who had been sitting cross-legged feeling for Haki, jumped up when he heard Kakashi’s call. Luffy walked up to Enel and smiled. "Please teach me something!"

Enel’s expression was now completely numb. He wanted to escape this humiliation, but his ship, the Maxim, was in the cave behind him. If he left, his wish to go to the endless Vearth would be gone forever. For the sake of his dream, he decided to endure it.

Enel focused on Luffy. He looked him over carefully and didn’t see the strange badge or the hammer. Seeing that Luffy had nothing to protect him, Enel felt relieved. "Hmph!" he scoffed, shooting a bolt of lightning in the shape of a dragon at Luffy. The Thunder Dragon instantly swallowed him, and Enel wore a confident smile.

"Hahaha... finally dead! You Blue Sea man."

When the lightning dissipated, Luffy was still standing there, smiling cutely.

"Oh? What happened?" he asked.

Enel was left speechless.

"Whatever! I’m going in!" Luffy declared, raising his fist and rushing toward Enel.

Armament Haki wrapped around Luffy’s fist. When he felt his Haki was insufficient, he suddenly remembered Ryuma. He tried to combine his Ryuma with his Haki. Soon, his Haki, which had been vague, became dense and stable.

Luffy had successfully performed the most basic form of Armament Haki. Though using his Ryuma was a bit of a cheat, Luffy believed that next time, he would be able to do it with just his own will.

"So that’s how it works... Enhancing my Ryuma can enhance my will... That’s really powerful!" Luffy had always used his Ryuma instinctively, never thinking to develop it further. Now, he began to imagine all the cool things he could do. But now wasn’t the time to think; he was in a fight.

Luffy’s Haki-infused fist hit Enel’s abdomen. Seeing so many people ignore his lightning attacks, Enel quickly came to his senses and used his Mantra to dodge the punch. Against Mantra, Luffy’s rubber moves were not enough.

Unless Luffy mastered Observation Haki, it would be almost impossible to defeat Enel. With his Logia Devil Fruit and Observation Haki, Enel was a major threat in the first half of the Grand Line. If Enel hadn’t actively used the true form of the Thunder God in the original story, Luffy probably wouldn’t have been able to defeat him.