This is an idea that I had for a little bit of time; I really have no idea where I plan to go with this story idea, but I just wanted to write down. This story will focus primarily on an OC so if you're not interested in that, you don't have to read it.

After the God Valley Battle between the Roger Pirates and the Rocks Pirates, Rayleigh had a fear of morality. Thinking that he wasn't leaving a legacy behind, other than being the right hand of the Pirate King, he had a son. How will the world deal with "Dark Prince" Silvers D. Kenway?

Sabaody Archipelago: Three years before Roger's execution

A young four year old boy was running up to a pirate ship. Not just any ship that was docked, but of the ship of the Roger Pirates. A young looking woman was chasing after him. The boy had stars in his eyes until the woman caught up to him.

"Kenway slow down! Your father will meet us at the house!" The woman told him sternly as she held a cigarette in her mouth. "But mom! I wanna see dad's captain and the crew!"

A boisterous laughter was heard from the gangplank as two men came down. One had blonde hair, like the young boy, and glasses, with a scar across his right eye and a black stubble for a beard. The other man had a curved black mustache and quite taller than the blonde man, standing at an even 9'0" tall.

"Guess your son couldn't wait now could he Ray!" The taller man had said, making the blonde man shake his head with amusement. "Apparently not Roger."

Rayleigh bent down and picked up Kenway who a bright smile on his face. "How long can you stay before your next adventure dad?" Kenway asked. "Can I go with you? I've been training!" Roger laughed as Rayleigh hid his amusement behind a stern look.

"Oh really? What have you been training with?" "Swords dad! I wanna be like you and Uncle Roger!" Roger laughed harder as Rayleigh frowned. "How many? And where did your mother even let you get one from?" His gaze looked over at Shakky who smiled with her eyes closed.

"I've been using sticks dad." Kenway said with a pout. "I'm not that dangerous." Rayleigh let out a sigh of relief. "Sure why not?" Roger spoke up with a grin before Rayleigh glared at him comically. "ABSOLUTELY NOT CAPTAIN!"

"What? He'd fit right in with Shanks and Buggy." Roger said with a shrug. Rayleigh had a vein in his forehead. "Because Kenway is four! Shanks and Buggy are at least teenagers."

Kenway pouted more before Rayleigh kneeled eye level with him. "Once you're older, I'm sure you can go on your own adventures. I might even join you on some of them okay Kenway?" Rayleigh said with a fatherly smile before Kenway nodded his head, matching his smile with his own.

"Now go back over to your mother. We won't be staying for long, we gotta get back on the seas before Garp shows up." Kenway nodded and ran back over to Shakky.

"Garp will be coming, try to stay hidden away." Rayleigh told them as Shakky waved her hand. "We both know how Garp is, he won't do anything to us Rayleigh."

"I'm not so much worried about him but the others that he might have with him. You've heard of the up and coming rear admirals, especially that one named Sakazuki. He's vicious, ruthless." Rayleigh walked over to them and hugged them.

"If he got his hands on either of you…." His worried tone became clear as Shakky kissed his cheek. "Ray, we'll be fine. I've managed to outrun Garp before. This rear admiral will be nothing."

Rayleigh stood up before walking off into one of Sabaody's many trees. Little did Rayleigh know, that would be the last time he would see his son for many years.

Two years after Roger's death

"Is he gone again?" Kenway asked his mother softly. Since Roger's execution and the beginning of the Great Pirate Era, Rayleigh went on what Kenway called them "trips" to wherever he felt like. He knew his father was strong, he had to be in order to be the right hand of the Pirate King, but it didn't mean he didn't miss him.

Shakky nodded. "He got a tip of a slave auction and went off to take care of it. You know him, he'll be back in a week or two."

Kenway pouted. "I've gotten better though! I can get that black stuff that dad showed me to start appearing on objects now!" Kenway had unlocked Armament Haki by accident when his father was pushing him in one of their training sessions and Kenway had been working hard to keep it active as long as he could.

Shakky giggled lightly. "Well I'm sure that you'll have down in no time flat by the time he gets back." She looked at the time before smiling. "Go on home for now my son, I've got to open up the bar."

Kenway smiled brightly. "Okay mom!" He bounded off out the back door, through the forest, to their home. It was a small little place, roomy enough for the three of them but also adequate to fit all their needs.

After arriving at his home, he grabbed a stick, large enough to be wielded as a blade before he focused on bringing out that black energy before he heard unfamiliar voices laughing.

He quickly hid himself before he was discovered. There were three large men, all taller than his father he noted. He didn't hide himself fast enough before they spotted him. "Hey! Kid!"

Kenway took off, running through trees. He was familiar with this tree of Sabaody, having grown up in this section all his life. He was slightly panicked as he ran through the trees, dodging tree branches and roots, as for some reason he could feel that they were getting closer to getting him.

He felt them reach for him before he slid underneath a large enough root to dodge their grip and made a quick left, trying to head back towards the main town area.

On his way there, and more focused about the men chasing him, he bumped into a tall man and fell back on his rear. He shook his head as he looked up at the man who was wearing pink sunglasses. "Fuffufufu…. Kid, you should be more careful running around like that."

"I'm sorry sir, I didn't mean to. These three men were chasing me and I-" He was interrupted as the three men caught up to him. "Oy, brat! How dare you make us run after you like that!"

He turned around, stick in hand. The stick itself was whittled down to look like a sword, equating to be little more than a training sword. He glared at the three men, shaking slightly.

"Fuffufufu… three men like you got worn out by chasing a kid? What a riot!" The sunglass wearing man laughed with a grin. Subtly moving his fingers, he maneuvered strings around the area to prevent the men from leaving. 'Let's see what you got kid.'

Kenway gripped his training sword tightly before rushing forward at a speed faster than a kid should move, surprising the three men. He smashed the sword against one man's leg hard, causing the said man to yelp before rolling to avoid another man's fist. He turned and sent a hard right to his face, pushing the man back.

The blonde man whistled slightly with a grin still plastered on his face. 'He's fast, got some good training. But he could be better, these three are low bounty pirates. For the island right before the New World, it won't be enough if he were to just go into the deep end.' He attached his string to the remaining one who looked like he was having second thoughts. 'Let's see how he does with one of my puppets.'

Kenway was catching his breath, having beaten down one of them as the other was crawling away from him. He felt something perk in his brain before he barely dodged a fist aimed for his head. 'He's faster than the others!' Kenway thought with wide eyes.

He turned his attention to the man who looked like he was in fear, not in control of his body. 'Devil Fruit, but which one?' He noticed a faint glimmer attached to the man and followed it back to the tall blonde man who was still grinning. 'A test?'

He yelped as he ducked under a fist before swinging his sword to the slaver's unprotected ribs. Not stopping his assault, he didn't notice the sword was started to shine black as the blonde man's eyes narrowed behind his glasses. 'Armament and Observation, granted Observation is at the bare minimum with him. I wonder….'

The blonde man released his string and disappeared as there was a marine presence nearby. The fight had drawn their attention and they had their guns aimed at the three men and child.

Kenway's eyes widened in fear at the sight of the marines. 'Oh no…' He started to back away. "No… I won't be taken!" The Marine Captain took a step towards him. "We just want to talk to you lad." "No! My father warned me against the Marines! He said to never be caught by them, that they'd take me away from him and my mother!"

The captain's eyes narrowed. "We just want to talk son. That's all. If you resist, we'll have to arrest you too."

Kenway's eyes widened and more before he felt something snap in him. "No! You won't take me away from them! You'll stop, RIGHT NOW!" He yelled as a wave of oppression came off of him and knocked the marines out, as well as the captain and the would-be kidnappers.

The blonde man's jaw dropped as he observed from one of the trees. "Conqueror's too…" Let it be known that he was rarely surprised but this…. This took the cake for him. He started to laugh before making his appearance known again.

"Quite impressive lad. You have all three Haki." The man said in a friendly tone. Kenway tilted his head in confusion for elaboration. "Armament, that black energy on your sword. Observation, being able to predict where attacks are coming from and why you were able to escape the slavers for a time being. And Conqueror's, the Emperor's aura, to exert your willpower over others."

He placed a hand on Kenway's shoulder with a smile. "How about you join my crew lad? And don't worry about being too young, I can help you learn about the power that you hold as well as making sure you're well protected."

Kenway's eyes sparkled as he nodded. "Hai! I'll gladly join with you! I've wanted to set sail with my father when he was still with his captain."

"Fuffufufu…. Well then. I'm Donquixote Doflamingo, Captain of the Donquixote Pirates."

Kenway smiled brightly. "I'm Silvers Kenway!" Doflamingo's eyes widened behind his sunglasses before starting to laugh softly.

Five Years later, Kenway's age is 14

"Again, but faster!" A tall man with black sunglasses barked out as Kenway rolled out of the way of his fist. Using armament on his own fist, he snapped towards him in a vanish, delivering a solid right to the open hand of his opponent.

"The boy's doing quite well Doffy." Trebol said, watching with Doflammingo and the other officers.

"Indeed. Soon enough he'll exceed Vergo's training and potentially move on to being one of our officers." A man with a golden helmet, Pica, said in his high-pitched voice.

Doflamingo sat with a wine glass in hand, looking on. "I have something else in mind…. Have you seen the papers yet?" Trebol nodded his head as Doflamingo continued. "Four Emperors. Red-Hair, Whitebeard, Big Mom, and Kaido. The winds are changing, and they have filled the vacuum left behind by Gol D. Roger and the disappearance of "Gold Lion" Shiki."

Doflamingo took a sip of wine. "I want Kenway to eventually be my representative in the Underworld. The name "Joker" is already being spread throughout its depths and I want him as my main representative. After all, might makes right."

Kenway kicked away Vergo's bamboo stick before unleashing a barrage of armament-infused punches into Vergo's torso, eventually pushing him back. Vergo covered his whole body in armament in the meantime, but the blows still stung. Kenway eventually backflipped away and unleashed a flying slash at Vergo who was forced to roll away.

Vergo grabbed his bamboo stick, infusing it with Haki before meeting Kenway in a clash of blade and stick, both being equal in power. Vergo would sidestep and approach from a different direction before Kenway intercepted it or would move back to try and force an overextension on Vergo's part for an opening.

They both went for a finishing blow before Doflamingo called them both off with a simple "Enough" and they both relaxed their stances. Kenway panted slightly from the training session.

He had grown from the small child he was. Now being fourteen years of age, Kenway stood at 5'7" tall with longer blonde hair. If no one knew better, they could easily mistake him as Doflamingo's younger brother. He had a pair of glasses like his father.

Doflamingo applauded them as they bowed to each other. "Very well done. Soon we'll be able to move onto Dressora so that I can reclaim my position as king that my father so foolishly gave away." All four officers and Kenway responded with an "Aye sir" as Doflamingo started to laugh.

"Fuffufufu. You may all leave except for Vergo and Kenway." The other three nodded and left. "Kenway, once you've proven your mettle, I want you to be my representative in the Underworld. You'll need a different name to use there as your father Rayleigh made many enemies that would gladly hunt you down."

Kenway frowned softly before speaking darkly. "If they wish to harm me, then they will die." He sheathed his sword and threw his coat back on, letting it rest on his shoulders. "I do not care of what others think of me Captain, let them form their own opinions. If they wish to go after me for the deeds of my father, then they are fools rushing to an early grave."

Doflamingo smiled with dark glee. "Fuffufufu perfectly said!" He looked at Vergo. "I want you to infiltrate and join the marines. It'll make my job of reclaiming Dressora easier, as well as providing information to us to better work out our plans in the shadows."

They both nodded at their assigned tasks. "Both missions will be long-term missions, especially yours Vergo. We may not meet again in person, but I trust in you. Kenway, I must get you familiar with the Underground network as their Emperors."

Kenway nodded before bumping fists with Vergo, the last time he would see the future Vice Admiral. Doflamingo frowned with annoyance as his Mushi rang. "What is it? I gave clear instructions to not be interrupted!"

"Worororo, is that anyway to talk to your employer Joker?" Doflamingo paled considerably as the snail's face took that of a beastly looking man with a Fu Manchu mustache. "F-forgive me Kaido-san. I thought it was one of my subordinates."

Kenway's eyes widened only slightly at the mention of the Emperor of Beasts. "Hmm I'll forgive you this time. What's the state of your plans? I want those SMILE devil fruits to start production soon."

"S-soon Kaido-San. I estimate we can start production in three years' time. Once I get into contact with the right scientist, as well as ensuring that the marines don't catch word of it, we can start operation of SMILE."

"Worororo~ very good Joker." The snail looked at Kenway with a narrowed gaze. "And who is this Joker? He looks familiar." Doflamingo went to speak before Kenway took a knee. "I am Silvers D. Kenway, mighty Kaido." "Worororo! That's why you look familiar! You're Rayleigh's little brat!"

Doflamingo went to reprimand him before Kaido spoke again. "Joker, he's respectful and aware of his position. Tell me lad, I see that you have a sword there. How would you like to come to Wano to train in that blade?" Doflamingo's jaw dropped as Kenway's eyes widened.

"It would be the greatest honor Kaido-sama." Kenway replied as he bowed to the snail. Kaido laughed heartily. "I like him! He's got strength, a good head on his shoulders, and isn't afraid to get down and dirty when he has to! I might just keep him Joker."

Doflamingo spoke up weakly, "B-but I'll need him- ""What was that Joker?" "Y-you can have him if you want him sir!" "That's what I thought you said."

The snail smirked darkly. "I'll have King come down to get him in a few months' time Joker. Ensure he is ready to learn and join the mighty Beast Pirates!"

The mushi call ended as Doflamingo slumped back into his chair, sitting in it right for once. Kenway looked giddy, eager to advance his swordsmanship. "Kenway.." Doflamingo spoke up, causing Kenway to turn to him. "Kaido is not as lenient as I am, and you know I worked you to the bone in increasing your strength. He will expect a lot more from you than I have."

Kenway nodded his head. "I understand Doflamingo. If it comes to me having to leave the Donquixote Pirates to join him, please know that I have enjoyed my time as one of your crew members and I have learned a great deal from all of you."

Doflamingo nodded softly, a faint smile appearing on his face. 'It's a shame I lost such a great tool, but I wouldn't jeopardize my own goals and operations just to screw Kaido over.'

Months later

Kenway had a blank look on his face. "No." A large man with glasses and a ponytail had a comical expression on his face as an armored looking man and Kaido looked at him curiously. "What do you mean no?! It's an honor to have a devil fruit picked out by Kaido-san!"

Kenway just glared at the large man. "I don't need one. The most common weakness in devil fruits is that the user becomes too reliant on them. I'll take one if I feel I'm ready for it, once my own skills are sharpened to the point that I can deal with most of my opponents."

Queen's jaw dropped at that logic as King's eyes were closed, a simple nod at the sound logic. Kaido meanwhile laughed heartily. "I knew it was a good idea to swipe you from Joker!"

Kaido turned serious. "I have a long-term mission for you Kenway." Kenway looked up to the captain of the Beast Pirates with a serious expression, nodding his head. "I want you to befriended my daughter, Yamato. Help her bring out her power, and please, for the love of everything, I will make you an All-Star if you can get her out of that Oden phase she's going through!"

Kenway sweatdropped slightly at the mention of Kozuki Oden but nodded slightly. "I will try my best, Lord Kaido."

A week later

Kenway pinched his nose in frustration. 'I really shouldn't have taken Doflamingo's offer all those years ago. How is it I'm more mature than she is, but I'm younger.'

The reason for Kenway's frustration? Kaido's daughter, Yamato. When he had first introduced himself to the taller woman (which he still wasn't happy about, he was 5'5" and she was already 6'4"!) she attacked him out of anger, not for him but for her father. Clashing sword against kanabo club, the fight lasted for days, with no side giving any leniency. Eventually the fight died off when both realized they weren't making any leeway and hunger set in for both of them.

She insisted to be called Oden, being reborn as him, after finding his logbook and proclaiming it to be her "bible." He understood the admiration, he admired his father and his uncle Roger after all, but this? This was something else entirely.

"Yamato." Kenway stated softly in the midst of their lunch. The white haired woman looked over at him with a confused look. "When your father told me about your… admiration of Kozuki Oden, I thought I would be able to help." He smiled fondly as Yamato got an even more confused look. "My father is Silvers Rayleigh, right hand of the Pirate King, Gold Roger."

Yamato's eyes had stars in them but before she could speak, he raised a hand. "Your admiration for Oden, his sacrifice and everything is impressive." He looked at her with a small glare and a small dose of Conqueror's Haki. "But to impersonate him is the greatest of crimes in my eyes. There was only one Kozuki Oden. If you admire him, drop the tenses of being him."

Yamato's stary look turned into one of anger as she grabbed her club. Before she could though, Kenway started again and what he said surprised her. "I met him when I was a child, and I can tell that he wouldn't want you to imitate him. He would want you to live your life, follow your dreams. And if they just so happen to coincide with his, who's going to stop you?"

He finished with a small smile as Yamato had tears running down her face. 'Dad… if I'm able to, I'm going to find you and apologize to both you and mom, for making you both worry so much about me.' He fell back as Yamato tackled him and with a comical yell, "Get off me woman! I'm not ready for that yet!"

After a tussle, both teens laughed softly before Yamato had a serious expression on her face. "You said, I don't have to show that I'm Oden anymore. But I can set my goals to align with what he wanted? How? Father will still be angry and keep me imprisoned if I don't follow what he commands."

Kenway scoffed and downed a glass bottle of water. "You know of the shinobi here right? Keep your true intentions hidden. The only one who would be suspicious would be King, and he wouldn't move against Kaido's wishes if he didn't have proof. Be the loyal little girl that Kaido wants, while within the shadows, plot to bring Kozuki Oden's dreams a reality."

Yamato nodded with a smile. "I think I can do that." "Good. Because I'm in the same boat as you. I don't plan on staying with Kaido longer than I need to, and he'll understand, to an extent, that I'll need to branch out and find my own way."

Kenway looked with a smirk at seeing her confused look. "He planned on making me an All-Star if I could break you out of the "Oden phase" as he called it, and an All-Star's going to need a crew of their own right?" Yamato's confused look turned into one of recognition.

"It may not be for a few years, but once he's seen how you're not constantly going off about Oden, he'll see that I broke you out of it. Once that happens, I'll start gathering a crew of my own." He smiled softly.