One Piece: I will become stronger by checking in

As soon as the three of them mounted the bird, it suddenly became so heavy that it started plummeting.

Kai quickly teleported to the bird's head, placing his fingers on its forehead. He spoke with a kind but firm tone:

"If you don't want us to enjoy some roasted bird for a snack today, you better fly as hard as you can!"

Immediately, the bird froze and its massive wings began flapping rapidly to regain its balance.

Even though the bird couldn't understand Kai's words, it felt the murderous intent and decided it better not tire out too soon.

"Wuhu!" Luffy looked around excitedly, clearly thrilled.

Zoro, lying on the bird's back, seemed exasperated. A thought crossed his mind:

"If you keep hanging out with this crew, you're going to get finished off sooner or later! None of them are normal!"

...

After some time, thanks to their powerful mount, they soon spotted a distant island.

Kai's eyes lit up with excitement.

Finally arriving at Orange Town! I wonder what new abilities I'll gain from checking in here this time?

He had been quite pleased with his previous sign-ins!

And...

There was one of the future Four Emperors on this island—Buggy the Clown.

Kai was curious as one of the trainee crew members of Pirate King.

Buggy's strength was still a mystery. Though he always acted quite grand, Kai wondered if he was genuinely powerful!

Kai wanted to find out more!

Ten minutes later, they were only a few hundred meters from the island when something unexpected happened.

Their mount was on the verge of collapse!

After carrying three people for so long, it had reached its physical limit. No amount of motivation could make it fly any further.

Seeing this, Kai felt a bit helpless.

Why couldn't it hold on just a bit longer?

So much effort, and it only required a short time to achieve the desired result.

Hey! Bird of the Void!

There was no choice but to carry these two idiots as the deputy captain.

Kai then lifted Luffy and Zoro one by one, just as before.

It seemed they needed to find a boat quickly; otherwise, when more people joined in the future, there wouldn't be enough hands to carry them.

After this experience, Zoro's reaction was noticeably less intense.

Although he was still a bit frightened looking down, there was no longer any yelling like before.

Eventually, the three of them arrived at Orange Town.

As soon as they set foot in town, a beautiful and familiar voice echoed in Kai's mind.

[Ding! Successfully checked into Orange Town! Obtained Observation Haki (Elementary), Armament Haki (Elementary)]

"Huh?"

(☆▽☆)!

"Haki?"

He had previously mentioned that once he mastered Armament Haki, he'd let Luffy experience the power of his "love fist."

And now, it was happening?

Thinking of this, Kai turned directly to Luffy:

"Hey, Luffy, come here!"

"What's up, Kai ?" Luffy walked over slowly. Kai suddenly punched him on the head.

"Ah!!"

"It hurts, it hurts!"

A large bump appeared on Luffy's head as he rolled on the ground.

"It hurts? Aren't you a rubber man? How could it hurt?" Zoro said in surprise.

"I...I don't know either!" Luffy covered his head, looking at Kai with a hint of fear.

"Kai hits me just like my grandpa used to. It hurts a lot!"

"Hey!" Kai was quite pleased with the test results.

Let's see if you dare to be arrogant in front of me next time!

"This is a punch full of love. Of course, it'll hurt when I hit you!" Kai said casually. Then he turned and walked away.

"Love?" Luffy looked confused and then clapped his hands.

"My grandpa used to say something similar. So, as long as there's love, you can hit me hard!"

"Souga!"

Zoro:...

"Can you be any more of an idiot?"

Zoro noticed a faint glow on Kai's fist earlier.

No doubt, that was the key to hurting Luffy.

What was that?

Zoro pondered this as he watched Kai walk away. It seemed the vice-captain was hiding quite a bit!

"Let's go. What are you two doing?" Kai turned to Zoro and Luffy, who were still standing there.

"Oh, right!"

...

"Eh? Kai , there's no one in this town!" Luffy asked, confused.

"Well, I'm not sure either!" Kai replied.

Although he knew everyone had moved away because the Buggy Pirates were around.

But it would sound too suspicious to say that directly.

So it was better to act confused even though he knew!

As the three continued into the town, a furious shout came from the distance.

"Stop, thief, don't run!"

Kai and the others turned to see three large men chasing a woman with orange hair.

When Kai saw this woman, a smile appeared on his lips.

"Nami, we meet again so soon!"

At that moment, Nami spotted Kai and the others, her eyes gleaming.

While running towards them, she called out:

"Boss, did you come to rescue me?"

"You really know how to take the blame as always, Nami!" Kai raised his hand and pointed in Nami's direction.

"Fingergun!"

Instantly, three energy blasts shot from Kai's fingers toward Nami.

"Whoosh!"

The three blasts grazed Nami's body and returned to him.

"Puff!"

There was a piercing sound, and the three pirates chasing her fell.

"Wow! Kai , how did you do that? You're so cool!" Luffy's eyes sparkled with admiration.

Zoro looked at Kai Vane curiously as well.

"This is quite advanced!"

"Let me explain the key points and see if you can understand!" Kai Vane said.

Luffy and Zoro eagerly stretched their necks, looking like attentive students.

Even though they didn't rely on this technique for fighting, it was a useful skill they wanted to learn!

"This move mainly depends on talent!"

"Alright, I'm done. How much you understand is up to you!"

"But it might be tough with your simple minds!"

Luffy, Zoro:...

"I'm going to beat you up!"

"I'm going to slice you!"

"Bang!"

"Bang!"

Zoro and Luffy ended up on the ground, raising their hands.

"You two still don't get who the big boss is, huh?" Kai clapped his hands and said calmly.

Nami, watching from the distance, was stunned.

"This... is this something humans can do?"