This story was inspired by Pokepika's Haunt. Her story One Piece: Growing up with Whitebeard is one of most personal favorites. I do have her consent on this story and really appreciate her for that. The summary is Pokepika's as well with minor adjustments

Summary:10 years ago, one 4 year old Monkey D. Luffy, 10 year old Ace, and 11 year old Sabo, met the most dangerous man to ever sail the seven seas, White Beard, and his beloved crew. Watch how events turn out for the siblings as they grow up with the famous White Beard pirates. Warning: Fem!Luffy fanfic, Ace ate his Devil Fruit before he meets Whitebeard. Starts right before the cannon ball that supposedly killed Sabo hits.

Disclaimer: I don't own One Piece and this story is highly inspired by Pokepika's Haunt's story "One Piece: Growing up with Whitebeard"

Sabo and Luffy were on a small boat that they stole and were headed out to sea, to travel around to the other side of the island. It was the shortest route back to Fushia Village. Ace was watching on a nearby cliff with a smile on his face, happy that his brother and little sister were able to escape without any troubles, but he thought too soon.

The Celestial Dragon had shot at the small boat, setting it aflame. Ace had yelled for his siblings to jump ship and save themselves, but just as the Celestial Dragon was about to sink it completely the little four-year-old Luffy had pushed her older brother into the water saving him from further injury while Luffy had taken the shot harshly.

"Luffy!" Sabo shouted and before he could climb onto the wreckage to save his sister, the Lord of the Coast had snatched him up by his shirt and dragged him to the cliff where Ace was waiting for them.

Sabo shot around and glared at the sea king. "Kou, why didn't you save Luffy? She's your friend isn't she?"

The dark brown beast only shook its head before diving back into the water, Luffy was his master and she had ordered him to save her brother and that was what he did and he needed to help heal her wounds as soon as possible.

Ace and Sabo stared at the burning remains of the boat, suddenly out of nowhere a flaming blue bird had swooped down to boat, clutching a bloodied body in its talons and made it's way to the cliff where Ace and Sabo were.

Gentaly laying down the girl on the soft grass. The boys darted to their little sister who was covered from head to toe in her own blood, they didn't touch her but they could make out the rise and fall of her chest, it was only a matter of time till she lost too much blood.

The sea king had returned, it's large head broke the surface of the water, a vial fill with a sparkling blue substance clench between its teeth and dropped it on his master's lap, Ace was quick to make Luffy drink the liquid.

They had dealt with the unique substance before when the girl was heavily injured, they poured the blue liquid into her mouth, and before they knew it she had woken up like she was late for something important. She glance around at her surrounding and spotted her worried brothers.

"Sabo-nii! Are you okay?" The little girl spat out.

Her older brother was on the brink of tears but nodded his head. Ace on the other hand grew more and more furious.

"You idiot you're lucky to be alive! Don't worry about Sabo, he's fine! What the hell were you thinking?" Ace screamed. Luffy cringing as he continued to scold her, she felt a change in the ocean's features and turned to look out to the sea to see a gigantic boat with a whale figurehead, a man with a white cresent mustache, that curled towards the sky and scars littered over his chest standing at the head of the boat. They all heard him yell in a booming voice.

"I'm placing this island under my protection, the nobles are to leave immediately, I won't tolerate your insolence here. This island is mine!"

The Celestial Dragon had attempted to fight back but was only to be punched further than they had expected. The Government wasn't going to be happy with the sudden news. Whitebeard had recieved the news of the saftey of the residents on the boat and had docked the Moby Dick at Fushia Village. There wasn't too much hassles from the citizens, they had dealt with a few pirates before but no one like them but he waited there for his son Marco to return with the child that he saved, regardless.

Ace, Sabo and Luffy were walking to Fushia Village, Ace had given up his shirt to cover the bloodied clothes. They did thank the man that had saved their sister's life, even if they shouldn't have to worry about her, they couldn't help it because Luffy was a child of the sea and she wasn't going to die from something as simple as that for a long time.

But it still worried them none the less. They reached the docks where Whitebeard towered over the children; Ace and Sabo could feel the intimidating aura the man emitted, but Luffy had other ideas.

"You're huge and so old! Are those scars real? Are you devil fruit user? That punch was so cool but I'm sure I could've taken care of it." She beamed. Ace and Sabo slammed a hand over their sister's mouth before she got them all killed but Whitebeard just gave a hearty laugh and patted the little girl's head, despite getting blood on his huge hands.

"Gurarara, they're real and I am devil fruit user. You're a cheeky brat aren't you." He stared down at the little girl who had already taken a full recovery from her injures. "What's your name?"

Luffy ripped her brother's hands from her mouth, took a quick breath before she could talk to the man. Still smiling her toothy smile, she replied.

"Monkey D. Luffy." She pointed to the older boys next to her. "These are my brothers, Ace-nii and Sabo-nii."

Ace turned to Sabo, nodding their heads in unision, picked up their little sister and sprinted in the other direction before she talked too much for their own comfort. The pirates didn't need to know what could get them into trouble. Whitebeard and Marco stared at the running children and then stared at each other before laughing.

"They're real interesting kids aren't they, son?" Whitebeard said.

"They sure are, but something concerns me," He stated seizing the laughter to a halt before he continued. "When I pulled the girl out of the rumble she was covered head to toe in her own blood and when I dropped her off at the cliff, a sea king had come out of the water and gave them a vial that healed all of the girl's wound instantaneously."

This caused a many eyebrows to arch, they have never heard of a sea king helping someone or a medicine that could cure injures miraculously, however, it certainly made their stay on the island all the more interesting.

Whitebeard and Marco had heard footsteps approunching and watched as a woman with dark green hair with a bandana wrapped over her head and an apron making her way towards them casually, with a soft smile on her face.

"I'm Makino, the owner of the local bar. The boys have told me how you saved Luffy and I must thank you for all your help. Please feel free to come and have a drink and a meal whenever you feel like and if you have any questions feel free to ask."

Makino was the type to welcome guests with open arms and since they saved Luffy from possible death she had taken upon herself to thank the men even if they were pirates. She wasn't one to judge a person by whatever title that was given to them and waited paciently for their reply to offer.

The pirates stared at the woman, Marco was the first to ask his question.

"I was wondering about Luffy. She seems to have some sort of power but we don't know what. Would you know?"

Makino tapped a finger against her chin; she had known the girl since she came to the island and then shook her head to the blonde haired man's question.

"Luffy was found on the beach wrapped in a blanket with nothing but her necklace with her name on it and lived with her brothers up at the mountain bandit's house. I've never seen her with any sort of powers so to speak. I would say to ask them but they're pretty withdrawn at the moment due to the ealier incident but they are really lovely kids, it just takes a bit of time to trust other people."

With an acknowledging nod from the man, Makino left to bring the beer to the pirate ship. They had earned it and even if the mayor was practaclly the opposite towards people with titles, it wasn't going to stop her from acknowledging the pirates.

Ace and Sabo glared down at their little sister rather harshly, they didn't know how long they could put up with her blunt antics, she had caused a lot of troubles for them. They were sitting at the cliff debating what to argue about first.

"Luffy, you're stupidily lucky Kou came with the vile. Do you know how lucky you are?" Ace said harshly. Still glaring daggers at the girl.

"But I knew Mama could heal me. T-that's why I pushed Sabo-nii before he got injured." Tears were treatening to spill out of her eyes but she held strong. She tightened her hold on her shirt and refused to show her tears to her brothers. She was a strong girl after all.

Ace and Sabo felt like they had kicked a puppy and hugged her at the same time and the tears natural flowed their cause and stained Sabo clothes and soaked Ace's bare shoulder. They heard the water next them break and they watched as Lord of the Coast had his gaze on the little girl.

"Luffy-sama, the pirates have taken up the bar. What are you going to do?"

She wiped away the tears away forcefully, rubbing her eyes until they were red. She thought about what the sea king had said and then informed her brothers about the little message and they all grew devilish smirks.

For the passed couple of days that the Whitebeard pirates were on Dawn Island they were faced with countless pranks from the children and were growing more paranoid with every corner they turned. Ace and Sabo were practaclly kililing themselves over how hiliarious the crew's reaction of the whole thing was to them. They decided to given them a break for the day just to see how paranoid they were.

Luffy was drinking juice at Makino's bar, happily swinging her feet over the stool that was located at the counter. Marco had walked into the bar exhausted from the previous days antics and spotted the little girl drinking juice at the counter and sat down next to her.

"Luffy," He said as he sat down next the girl at the counter. She turned her attention to the man who had saved her life but didn't put the glass down. She gave a slight nod, indicating that she was listening slightly. "I want to ask you a few questions."

Luffy placed her glass down, giving him her full attention, she wasn't going to be rude after all.

"Shoot." She replied

Marco debated to himself on which question to ask first, there were so many that littered through out his mind and then came to one.

"What are you?" The question sounded every rude when it was said, things always sounded better in someone's head, though to his surprise Luffy didn't even give a second thought before answering and wasn't the slightest bit offended.

"I'm the daughter of the sea." Luffy grinned, obviously proud of that fact and then stared at the blonde haired man. His face was blank with confusion and obviously didn't understand the point she was trying to get across. She stared at her hand, waited till Marco's gazed followed her's and changed her hand into a dragon like claw that was littered with ruby red scales and long deadly nails and held it up to him.

"Is it a Devil Fruit?"

Her expression wasn't one that Marco was expecting, she looked like she was going to murder someone. He harshly swallowed the lump in throat and continue with the nervous eye contact.

"I would never go near one of those fruits plus Mama personally drowns all of them. No exception." Marco was getting more curious by what the girl said.

"Who's 'Mama'?"

But before Luffy could continue blabbering her mouth off, Ace had swooped in and stole his sister back.

Marco sighed as he saw his chance for answers get dragged away by a ten-year-old boy.

Ace had dragged Luffy all the way back to the cliff where he sat her down and scolded her about telling them too much information and told her to stay put. Sabo was feeding the local sea king and was needed come help, so he left soon after.

Luffy did as Ace had told her to do and waited patiently, swinging her legs over the edge, but was soon knocked unconscious by something hard to her head. Ace and Sabo were on their way back to their sister but saw her being carried off by different group of mountain bandits. Dadan's group, though they were the toughest in the area, weren't stupid enough to attack Luffy, however, these bandits were.

"Sabo go find help now! I'll follow them and make sure Luffy's okay." Ace ordered. Sabo didn't need any further instruction and ran in the direction of the village. Ace had followed the bandits, he wanted to kill them all for harming Luffy but if he were to advance, they could kill her without a second thought. The next simplest thing to do; the only thing he could do was follow them to their hideout.

Sabo raced through the village in hope of finding someone help their sister, he knew that she could always ask her mother for help but she was too damn stubborn for her own good some times.

He ran to the Party Bar, no one was there. He sprinted to the docks and found Marco and Whitebeard talking about something and noticed the distressed boy. Jogging up to him, they watched as he stopped, his hands on his knees while he caught his breath.

"Sabo what's the matter?" Marco asked, trying to keep the calm in his voice to reassure the boy.

"It's Luffy...she was taken by...mountain bandits…Ace is...following them." Sabo huffed. Once gaining enough strength, he tugged on Marco's shirt sheelve and led them in the direction of the forest.

Once they had reached the forest, Marco picked up the boy and ran in the direction Sabo had instructed, Whitebeard following behind them. They soon caught up to Ace who running towards them, obviously held knowledges of their little sister's location and told them that he found where they were. Marco had released his hold on the top hatted child and watched as they zipped through the dense brush.

Ace and Sabo were actually a lot faster than they imagined and made their way to a beaten down hut in a clearing. It looked like one of the buildings pulled out of Grey Terminal. The brothers nodded to each other before running to an open window and peeked in to see the little girl tired up, short black hair ruffled up and white shirt covered in dirt, shorts turn apart and in tatters. Luffy's breaths were heavy, a cough and blood trickled down tiny chin.

The boys were filled with rage to see their little sister in such a condition; they were about to storm in and destroy anything in their path, but a hand was placed on each of the brother's shoulders. Marco had finally caught up with the boys and stopped them from doing anythiny too dangerous, otherwise the little girl was going to be a enough trouble than she wanted to get herself into. They heard footsteps shift in the hut and turned attention to hone in on their converation.

"That's a pretty necklace you've got there, girly." The head bandit said as he stalked his way to Luffy. He gave her a toothy grin, as he eyed the golden necklace that hung low around her scrawny neck.

"Don't touch my necklace!" Her voice alone could have stopped anyone in their footsteps but it didn't take long for the head of the bandits to recover and continue casually strolling up to the girl. The leader just knelt down to her height and clutched the pure golden necklace in his hand. Rubbing the smooth surface against thick skinned thumb.

Ace and Sabo started trembling in their spot. Marco looked down at the boys, tightening grip on the boys to prevent them from moving, thinking that they further enraged but he was wrong when he saw the absolute terror in their eyes. Sabo was the first to react and yelled in a hushed tone.

"We need to get out of here. If he takes off that necklace it's going to be the end of us." Just as he said that the sound of scraping of metal came from the inside of the hut. Ace had grabbed Sabo's hand, the other gripping onto Marco's arm and they dragged themselves back into the forest to see Whitebeard keeping his distance. When they reached a safe distance they watched as the hut crumbled away and a ruby red serpent, thick red fins on its arms, a dragon like head, raven mane and twin twisted horns sprouting from its head. Its scaly body grew larger than anything they have ever seen, even Whitebeard was surprised to see something probably twenty maybe thirty times larger than himself.

"This is what she meant by daughter of the sea." Marco muttered.

Luffy's serpent form was witnessed all over Dawn Island and wasn't taken lightly, screams could be heard all way from the town. After Luffy had crushed the bandits from under her, she spotted Whitebeard, Marco and her brothers staring up at her. She turned her head away in shame and dragged her snake like body into the ocean and stayed deep under the water surface until things settled down.

A similar incident happened before and she had to live under the water for a two month, she withered in loneliness, she wanted to see Ace, Sabo, Makino and the mayor but knew it would put them in harms way. Marines had swarmed the island in search of the supposed sea king and claimed in on the safety of the residents that they stayed for a while, but when Luffy refused to surface until given word from the her friend, Kou. She wasn't already in a very bad mental condition.

Ace watched his sister slide into the ocean and wasted no time to rushed to the ruins to find her golden chain. Sabo had joined the search.

When Ace had finally gathered all of the pieces, he went back to Marco with the glittering gold and seashell with the girl's name it and thrusted it into his face. His expression was filled with anger, hatred and determination.

"Marco, can you please help her. If she has to go through something like this again, I don't know how long it'll be till we see her again and I'm positive the marines will come to take her now that they know she's here." Ace wasn't the one to beg, but his sister's life was once again in terrible danger. She'll be dragged away if they didn't do something quick.

Marco stared down at the gold chain, pulled it in his hand. It was a lot heavier then he had originally thought and they all rushed back to the town. The villagers had spotted the red sea king and were running around panicking. Ace had explained along the way that the necklace was from her mother to keep her from transforming when she got too emotional, the sooner they fixed it and got it back around her neck the sooner she could come home, though they couldn't really call it home anymore.

Sabo had interjected at this point to ask them something.

"Whitebeard, it may be a lot to ask, but can you take us with you on your voyage? Luffy isn't safe here anymore and family sticks together."

Ace nodded is head in agreement, he wasn't going anywhere without Luffy. Whitebeard only smiled at the boy's little speech.

"Well said. Welcome to the family, my sons."

AN: Everything about Luffy's heritage will be explained in the next chapter about the meaning of being the "Daughter of the Sea"