Comparing the two Luffies, this Luffy is so cool!

【"ah!"】

Upon hearing this, Prince Shark Star was shocked, "No... No!!"

Luffy has a strange expression: "Huh? You're too honest. I just asked you a question and you couldn't keep the secret~~"

"No, I didn't say that!" Prince Shark Star quickly retorted.

Shirley, standing by, gently rubbed her forehead and sighed, "Ah... Your Highness, Shark Star, your reaction immediately proves that Straw Hat Luffy was right..."

Realizing that Luffy has confirmed Shirahoshi's status as Sea King, Shark Star looked at Luffy with a wary gaze: "Straw Hat Luffy, are you also coveting my sister's Sea King ability like Vander Decken?"

"Prince Shark Star, you don't have to be so hostile towards me!!"

Luffy looked at Shark Star calmly, "My strength is there. If I want to take anything from Fishman Island, no one in the entire Fishman Island can stop me! Of course, I can also say frankly that I came to Ryugu Castle to confirm whether Princess Shirahoshi is the Sea King. Now it seems to be confirmed."

"Let's put everything else aside for now. Since this Vander Decken has been plaguing Princess Shirahoshi for ten years, I'll help you solve the problem!" Luffy said.

After a brief exchange, Shark Star's hostility towards Luffy eased considerably.

[They arrived outside the Shell Tower~~]

"Straw Hat Luffy, I choose to trust you. I hope you won't betray my trust in you!! Otherwise, even if my strength is far inferior to yours, I will use my life to protect my sister!!"

Shark Star gave Luffy a serious look, then waved to the soldiers guarding the Shell Tower.

[The soldiers received Shark Star's order and immediately opened the Shell Tower! ]

Shark Star looked at everyone and said, "My sister is very timid, so don't go in with too many people. Luffy, just you and I can go in."

Luffy nodded: "No problem."

[Arriving inside the Shell Tower, Princess Shirahoshi huddled in a corner in a panic~~~]

Although everything here is arranged according to the princess's boudoir, a "cage" is still a "cage". Luffy felt very uncomfortable as soon as he entered~~~

[The feeling of depression and loneliness is almost overwhelming...! ! ]

Thinking of Princess Shirahoshi having lived here since she was 6 years old, Luffy suddenly felt sympathy for this mermaid princess whom he had never met~~~

"Really...? Mr. Luffy, can you really free me from Vanderdecken's curse forever?"

After listening to Sharkstar's introduction, Shirahoshi excitedly picked up Luffy and held him in his palm.

"Yes, but I need your cooperation, Princess Shirahoshi, because I need to determine Vander Decken's location."

[As Luffy was speaking, a spear suddenly flew in from outside~~~]

[“Oh no! A weapon just flew in!!”]

"Princess, be careful!!"

[The guard outside immediately shouted anxiously.]

[Luffy stretched out his hand and pressed the spear down~~~]

He waved the spear in front of Shirahoshi's eyes. "Look, if we just follow the direction the weapon came from, I can pull out Vander Decken, who's hiding in the deep sea."

Shirahoshi was still a bit frightened after being startled by the flying spear. She said timidly, "Mr. Luffy..., it's really... really great~~~"

[Bringing Shirahoshi out of Ryugu Castle, Shark Star also brought along a few of his trusted guards.]

[Considering the deep sea, Luffy asked Franky to drive the Merry out. With the coating, it can travel freely in the deep sea. ]

Shirahoshi's body is only slightly smaller than the Merry, so she can't ride on the Merry and can only swim beside it.

"It's not certain when Vander Decken's next weapon will arrive. Shirahoshi, is there anywhere you'd like to go?" Luffy asked.

Shirahoshi said timidly, "Well... of course there are a lot...!!! But... if it's okay... I'd like to go to the Sea Forest first to pay my respects to Mom~~~"

[Soon, the group arrived at the Sea Forest.]

[Not long after Princess Shirahoshi finished paying tribute to Princess Otohime, a weapon flew towards her!!!]

Luffy reached out and grabbed the weapon, then looked in the direction it was coming from and said, "We've determined the basic direction. Now we can set off!!"

[Merry sets sail~~~]

After traveling in the designated direction for about half an hour, another weapon flew out from the sea!

"Great! Now the direction is even more certain!"

Luffy, wearing a bubble wrap, stood in the sea, his observation Haki fully activated, covering the surrounding sea area with it~~~

After sailing for about two hours, and after experiencing three weapons, Luffy's observation Haki finally revealed the outline of a pirate ship.

[“Found it!!”]

[Luffy swam forward~~~]

[Shark Star saw this and quickly picked up his pitchfork and followed! ! ]

[Vander Decken and his group rushed out immediately after hearing the commotion outside.]

[Under Luffy's domineering aura, all those pirate minions were instantly knocked to the ground! ! ]

As for Vander Decken, he was about to attack when several arms suddenly appeared on his body, pinning his arms behind his back.

[“Vander Decken!! You’ve caused my sister to lose 10 years of freedom. Today I’m here to take your life!!——”]

[With a heart full of rage, Shark Star rushed forward, and the hammer in his hand fiercely penetrated Vander Decken's chest! ! ! ]

[Ten years of accumulated resentment, released in one day!!!]

[Shark Star twisted the steel fork in his hand vigorously, completely crushing Vander Decken's heart! !]

【the next day......】

King Neptune entertained the Straw Hat Pirates with a banquet of the highest standard.

【Luffy is showing off his physique like crazy! 】

Sanji's nose bled like crazy as the mermaid girl's sweet voice sang again and again...

That night, Luffy proposed to Neptune the idea of asking Shirahoshi to go with him.

[When Neptune heard that Luffy wanted to kidnap his precious daughter, he naturally refused to agree! ! ! ]

[But Luffy is patient... He explained to Neptune the possible consequences of being the Sea King of Shirahoshi~~]

【finally......,】

[Under Luffy's persistent persuasion, Neptune drove Luffy and his crew out of Ryugu Castle...]

Seeing Luffy's dejected look, Robin couldn't help but chuckle, "Ah, haha~~~, I told you, she's my only daughter. How could I bear to let her leave my side?"

"Ah ...

[Sanji lies on a stretcher, pounding his chest and stamping his feet~~~]

[He's been bleeding a lot these days, so he can't stand anymore...]

Luffy shrugged. "Never mind! A forced melon won't be sweet~~~ In that case, let's head to the New World!"

Shirahoshi: "I still can't get on Mr. Luffy's ship..."

Neptune: "If I could see the viewing system screen over there, I would probably agree. But I know nothing over there, so I definitely won't let Shirahoshi go."

Nami: "And it seems like everyone is leaving on bad terms~~~"

[Just as Luffy and his crew were about to board the ship, a shark boat came flying over! !]

[When they arrived, it was the eldest prince, Shark Star, who had brought White Star with him...]

Seeing the two, Luffy waved with relief: "Are you here to say goodbye?"

Shark Star holds a steel fork in his hand, folds his arms in front of his chest, and says coldly: "No! I'm here to give my sister to you~~"

【Nani? ? ? 】

[When they heard this, all the Straw Hat Pirates opened their mouths in shock!!]

"Hey, hey, hey! Didn't your father, King Neptune, reject Luffy's request?" Usopp shouted.

Shark Star shrugged. "Yes. But Shirahoshi really wants to see the world above the sea. When she learned that you were leaving, she cried and made a fuss yesterday... I really couldn't bear to see my sister so sad..."

"Mr. Luffy... I really want to see the outside world. Can you take me with you?" Shirahoshi looked at Luffy pitifully.

"But...your father..."

【Luffy was very happy about Shirahoshi's initiative. 】

"Don't worry about that. I'll explain it to Father. Actually, after Father rejected you yesterday, you didn't force your hand over. That's when I knew I could safely entrust my sister to you!"

【Shark Star speaks his heart out.】

If the Straw Hat Pirates had any evil thoughts towards Shirahoshi, they could just snatch her away~~~

[But the Straw Hat Pirates didn't do that, which made Shark Star completely recognize the quality of the Straw Hat Pirates! ! ]

"...Since you've said that, I won't be so pretentious!!! With Shirahoshi's identity, danger will come her way sooner or later. So, I can assure you that entrusting her to me is the best decision you, as her elder brother, have ever made for her!!"

【Luffy sincerely promised Shark Star.】

After some pleasantries, Shirahoshi boarded the Thousand Sunny, becoming a member of the Straw Hat Pirates and heading to the New World!

Vinsmoke Sanji: "Wow!!! Shirahoshi-chan over there is our partner!!"

Gol D. Roger: "Given the strength of the Straw Hat Pirates over there, it is indeed much safer for Shirahoshi to join the Straw Hat Pirates than to stay on Fishman Island!"

Edward Newgate: "That's right! Even if all three admirals of the navy were deployed, they wouldn't be able to defeat the Straw Hat Pirates over there!!"

Neptune: "Seeing that Shirahoshi finally boarded Straw Hat Luffy's ship, I felt relieved~~~"

The Thousand Sunny encountered an island whale on the seabed and was swept along by the deep-sea current created by the island whale.

By the time it reached the surface, it had already strayed far from the recorded pointer.

【"Sunlight!!--"】

[On the deck, Princess Shirahoshi put on a circle of wind-jet-powered swimming ring made by Usopp, allowing Shirahoshi to move freely on the deck~~]

[She raised her beautiful face, feeling the warmth of the real sun on her skin...]

【For her, it is the best thing in the world!!!】

"There's an island ahead. Should we go over there?"

[Usopp's voice came from the communication broadcast.]

"Okay! Let's get to the shore!"

【Following Luffy's order, the Thousand Sunny quickly docked. 】

Monkey D. Luffy: "Huh? This is Punk Hazard, right? Why doesn't their Punk Hazard have fire and ice?"

Roronoa Zoro: "It seems that because Aokiji and Akainu on their side didn't duel, the island is still the same as before."

Nico Robin: "Yes, this is what Punk Hazard should have originally looked like..."

(Nord's) [Luffy and his crew went to Punk Hazard and soon found a damaged research institute~~~]

Luffy used the ability to listen to the sounds of all things to get a lot of information from this ruin.

[So... this is the World Government's scientific research base, where they develop various weapons and medicines~~~]

[Four years ago, Caesar Clown of the Navy's science team betrayed the Navy, detonated the slime, and directly destroyed the entire island! ! ! ]

[The ruins of the research institute in front of the Straw Hat Pirates are one of the three original research institutes.]

Franky is overjoyed to learn that this is where Vegapunk once conducted research!

He rushed in, found the abandoned computer room, and ate up all the machines inside!!

[Later, they found a second abandoned research institute on the island. Franky did the same thing, eating up the entire main engine room! !]

"How's the effect?" The companions asked curiously as they watched Franky burp.

"Great! Hahaha!!! With this experimental data and knowledge, my transformation technology will be taken to the next level! There's still one last research institute! I can't let it go to waste! I'm going to eat it!"

[The island wasn't very large, so everyone quickly found the third research institute.]

[However, just as I was about to go in, I saw someone walking out of the research institute.]

He seemed lost in thought, not noticing the Straw Hat Pirates outside.

After walking a few steps, he suddenly stopped and looked up!

When he saw Luffy's appearance, he jumped back and exclaimed, "The Straw Hat Master!!!"