After their wounds and injuries healed, the Straw hats and BABA pirates went to Onigashima. It was a rather demonic looking island part of Wano country. The island itself has a port where ships can dock. Notable structures in this port include a gigantic katana piercing the ground, water spouters that resemble oni faces, and an enormous wagasa decorated with paper lanterns. The entrance to the port is lined with two statues depicting kitsune and a stairwell appears to connect the port to the interior of the giant skull with horns in the center. There is also at least one lookout station for those who are in guard duty.

"Can we get to Kaido and Big Mom already? Pink hair here is making me feel impatient..." Buggy said as he pointed at Bonney who was snuggling him.

"We need to go to the port of this creepy island, first. Jimbe, you got the wheel? My navigation isn't working too well here." Nami said.

"Yes! Things seem stable despite the guards around here. Guess since Robin, Brook, and Ussop are here, they'd been expecting us." Jimbe said.

"It's...it's so enormous here!" Luffy smiled amazed.

"I know right?! Those glowing skull eyes look so cool!" Chopper added as Carrot held him.

"Kaido's castle is deep in the island, right?" Sanji asked Franky.

"Yeah, that's what it looks like! It's farther from here than we expected! Right inside of that giant, skull!" Franky answered as he used his mechanical hand to shade his eyes.

"Your chest feels so soft when you're in a kimono~" Bonney flirted with Buggy. He stuck out his big tongue in disapproval. She then grabbed some meat from Karibou's bag and ate it with Luffy.

"We must by time for Kin'emon and the others to reach the back entrance too." Franky said.

"Who's Kin'emon?" Bonney said with a mouth full of meat.

"The samurai who made our samurai disguises. Like us, he wants to look for the other Straw Hats and beat Kaido and Big Mom." Luffy explained.

"He's gonna make us new disguises in order to blend into this island!" Ussop added.

"Cool! Buggy's gonna look even sexier!" Bonney had a heart in her eye.

"Woopeeee..." Buggy sarcastically said.

"pffftt..." Andy and Alvida tried not to laugh. Galdino rolled his black eyes.

"Hey um... Bonney, was your name, was it not? I heard your devil fruit powers can age people." Momonosuke said, coming out of the shadows.

"Yeah... it can. So?" Bonney said as she let go of Buggy.

Luffy's smile faded, looking concerned for the kid.

"Can... can you turn me back to 28 years old?" Momonosuke sniffled.

Luffy's eyes widened.

"WHHHHHAAAAAAATTTTT?! So you were that age, and you took advantage of being a child bathing with me, and didn't tell me?!" Nami said before hitting Momonosuke on the head.

There was a huge cartoon bump on his head as he fell down.

"Woah woah! Don't hit the child!" Buggy said with a shocked expression.

"This man isn't a child he's a lying pervert!" Nami yelled, causing Sanji to laugh in satisfaction.

"I just want to turn into a bigger dragon to help Luffy... I want to bring down Kaido!" Momo cried.

"Let me just turn him already!" Bonney said before touching him.

Momo glowed pink and turned 28 years old. His voice deepened and he grew more hair and got taller. His clothes were too small for him, so Adrian lended him his extra pair of clothes.

"Thanks. Oh man, I sound awesome!" Momonosuke said with a wide smile.

"Yeah, ya do!" Luffy added.

"That still doesn't make up for all the times you rubbed your face in my breasts you no good brat!" Nami mumbled.

"Such a fiery temper. Wonder what he did to her as a child." Jimbe said.

"Probably lay on her lap and chest. Gross." Zoro said, crossing his arms.

"Hey, I'd do that if I was a child too. OOF!" Sanji said before getting bonked on the head by Nami.

"Hey look! The guards are sleeping!" Carrot said.

"Must've been one of Ussop's tricks. It's no wonder we're easily passing through. Guess they made a lasting impact." Chopper said.

"It might be safe enough to go ashore." Zoro said as he looked through a pair of binoculars.

Everyone got off the ship and kept a low profile despite the guards being asleep. They met up with Kin'emon, who used the Fuku Fuku no mi on everyone's clothes to blend in with the Beast Pirates.

"Chopper! You look amazing!" Carrot waved.

"You look so sexy, Nami-swan!" Sanji said with hearts in his eyes.

"Buggy-sama, the horns make you look so cool and beautiful!" Bonney smiled.

"Whatever, bitch." Buggy mumbled.

"I feel so powerful! Heh heh!" Luffy smiled fist bumping Momo.

"Same here!" Momo smiled.

"Suuuupeeeer!" Franky shouted.

"Now you'll blend in just like Robin and the others! Make sure you take great caution to sneak into the castle for the final battle!" Kin'emon seriously said. He didn't even question Momo's sudden age change.

"Then we can get treats from Big Mom?!" Bonney asked.

"Sure. As long as we don't die in the process!" Buggy sighed.

"Kin'emon, this is quite the technique! So awesome!" Luffy yelled.

"I am grateful for your compliment, but we shouldn't be so loud. Now, since this is only my technique, once you take the clothes off, they'll turn right back into your kimonos. Good luck everyone!" Kin'emon honestly said.

"Um hey Kin'emon... Notice anything different about me?" Momo said to him, showing him his body.

"... You're taller?" The man dumbly said.

"More than that, he's older!" Nami facepalmed.

"What?! But how?!" Kin'emon made a funny eye popping face.

"He requested my Devil Fruit Powers to do that to him. It's kinda a life changing experience." Bonney said.

"It's a very life changing experience! I feel all funny!" Momo laughed.

"Let's just go already! I wanna beat Kaido!" Luffy said childishly.

The group snuck into the tower looking for Robin, Brook and Ussop.

Bonney stayed close to Buggy as he ignored her. Her brothers talked to each other about the Beast pirates, trying to blend in.

"Hey red nose!" A lady with white horns said, causing the boys to jump.

"You look... Vaguely familiar. Is this drink too heavy or... Have I seen you on a delivery service before?" She asked him. Her hair was long and blue with pink stripes. A pink mask covered her mouth.

"I don't know what you're talking about! I'm just here to join the beast pirates uh... Yeah! Me and my crew! We got new uniforms and everything!" Buggy lied.

"You've got to show Kaido-Sama you have what it takes. He is the best and no one could beat him! Rather, you have to earn his respect! I am Ulti-Chan! My brother, Pay-tan is in the office preparing the next execution. I'll show you to Kaido-Sama!" The last explained.

"Damn that was close..." Andrew thought.

"Nice to meet you, Ulti-Chan. But we don't have time for names. We want to meet Kaido and Big Mom, stat." Buggy said.

Ulti paused to glance at Luffy, recognizing his eyes from a wanted poster, but shook it off thinking it was just her imagination.

She pushed past the crowd and showed the disguised pirates to a big door. They went inside the tower.

"So who are you executing exactly?" Sanji asked her as he blushed.

"We're going to execute the "son" of Kaido, Yamato. I hate them so much!" Ulti's face turned red.

"Wait... Why'd you put finger quotes as you said the word "Son"?" Sanji asked.

"She wants to be a man like Oden when she's not. It's irritating. She hates my beloved Kaido Sama! He's gonna become pirate king so you better respect him!" Ulti growled.

"No." Luffy said.

"Shhhh!" Chopper, Nami and Carrot said.

"What was that?" Ulti raised an eyebrow.

"I said no. He's not gonna be Pirate King. I am." Luffy said before Nami covered his mouth.

"YOU ARE A BAKA BOY! BAKA BAKA BAKA BOY! NO ONE BUT KAIDO SAMA CAN BE THE PIRATE KING, BASTARD!" Ulti yelled at him.

"Mmmmm! Mmmm! Mmmm!" Luffy angrily mumbled, stretching and struggling in Nami's arms.

"Let's just move on... Ignore his delusions..." Buggy said.

Ulti took several deep breathes before walking forward.

"Let's keep going." Ulti grew a bit of scales on her peach skin.

The pirates looked around as they followed her, hoping Luffy wouldn't tick anyone else off.

"Luffy you idiot what the hell was that?!" Buggy whispered in his ear.

Nami uncovered Luffy's mouth and let go of him.

"I just REALLY wanna be Pirate King! Is that wrong?!"

"It's wrong when you anger people with said dream! Now keep it to yourself!" Buggy whisper growled.

"I really want Big Mom's sweeeets!" Bonney drooled.

"You'll get them soon, miss!" Ulti said to her.

End of Chapter 6