Alright! Here is the new one shot I have made! I thought long and hard about this one and when I was thinking about how to do a LuffyXShirahoshi one, I just so happened to be watching the little mermaid and wanted to do a spin off on it!

I can't remember who requested this story! I'm so sorry! I usually write it down who it was but I got so overloaded with one-shots I forgot! I hope you like the story though!

I will be writing four more one-shots before I make my rounds again on my stories! I will be doing the sequel to LawXRobin, an OcXMarco, a RobinXSabo, and a haikyuu one shot of KageyamaXTsukishima!

Also, I realized a lot of people make requests in the reviews a lot more. If you make a request in the review please include the following: (The pairing), (before, during, or after timeskip) if you don't care just say, (lemon or just one shot), and (anything you'd like to see happen in there/scene you want in there/specific detail added).

PLEASE READ THIS BOLDED PART! IT IS IMPORTANT IF I AM TO CONTINUE WRITING ONE-SHOTS!

Shirahoshi sighed in deep thought as she looked out her window from the castle out over the town below. Sometimes she wished she could go up to the human world and walk around with them like a normal person. Her mind was even more set upon it once she met Luffy. He was kind to her yet was also the first person to yell at her before. He was like prince charming to her.

She sighed again and flipped onto her back, staring up at the light that peeked through the waters like they were near the surface. Megalo swam over to her and nuzzled her side, trying to get her attention and ask what was wrong.

"I wish I was a human," She told him with a forlorn face.

Megalo tilted his head at her in confusion, not understanding what she saw in being human as being so great. He pushed his nose on her arm and gave her a smile, trying to cheer up his master who was not like her normal happy self.

"Doesn't it sound great?" She asked him with a smile, swimming to the other side of him and grabbing his fins. "Walking side by side with Luffy-sama. Holding hands, sailing the seas, doing adventures! It all sounds so nice!" She let out a small giggle at her thoughts that were making her heart flutter in excitement.

She sighed, her face becoming down trodden as she remembered how large she was compared to him and also a mermaid to boot. Luffy couldn't possibly see her in any other way than just a friend or maybe not even that… Her mood got darker and darker the more she thought about it and the tears brimmed her eyes and nearly overflowed.

Megalo whined as he swam around her worriedly, trying to find out why she was suddenly crying and trying to make her smile once more.

"I'm sorry. I didn't mean to cry suddenly." She told him while she wiped at her tears.

Megalo wagged his tail at her and swam around in circles, making himself dizzy until he was rolling. Shirahoshi finally laughed as she watched her friend cheer her up. She opened her mouth and reached out her hand to try and stop him as he got out of control, but not in time before he crashed into a bookcase.

"Oh, Megalo! Are you okay?" She asked worriedly as she swam over to him.

She pet his head tenderly and checked him over, watching as he nodded his head and smiled at her reassuringly. She giggled at him before a book fell off the bookcase and landed in her lap.

"Oh! What's this?" She asked, grabbing up the book and dusting off it's cover. "Book of spells?"

She glanced over at Megalo and shrugged her shoulders. Both of them were curious as to what was in the book. Page after page they glanced at the pictures and spells for all kinds of things. From cleaning a room, to levitating things, to even changing things appearances.

"Megalo, look! This is just what I need!" She said, pointing at the page she landed on.

It showed a picture of a mermaid on one side, and then a human on the other with arrows pointing from the mermaid to said human. She quickly looked over it; reading what ingredients she would need to complete this spell and become the human she so wanted to be.

"Silver kelp grass?" She asked herself, never hearing of the plant before near merman island. "Do you know where we can find some?"

Megalo thought to himself, looking at the picture of the plant that would be the hardest to find. He smiled and nodded his head like a bobble head doll. He knew exactly where to find some of the silver kelp grass from one of his outings through the small island.

"Let's go then!" She said with a wide smile, swimming quickly to her door and peeking out into the hallway. She looked back and forth, making sure her father and her brothers weren't around to find out what she was doing. "Megalo, hurry up."

She swam out quickly, sneaking around the castle from the guards and getting outside where she could follow Megalo to the place where the silver kelp grass was. Her excitement was beaming out of her the closer they got; she couldn't hold it in at the thought of being able to finally be with Luffy like a normal person.

"Megalo! You did it!" She said as the shark stopped and pointed at the small gap through the rock of the cave, showing the silver kelp grass beneath it hiding.

Shirahoshi squeezed her arm through and grabbed a handful of it, looking at it's shiny appearance and how it seemed to reflect the light that was shining down on it. It felt rubbery and it reminded her of how Luffy could stretch and bend any which way.

It didn't take her long to find an quiet place where she could start mixing the ingredients together. It took her awhile though to get it right because you had to do it exactly as the book said and do it in the right order. Shirahoshi was nearly crying and about to give up as she messed up once more with the mixture.

Suddenly the bowl of fluid bubbled and a light pink puff of smoke came out of it. Megalo and Shirahoshi looked down at the fluid in confusion, wondering if it had worked this time and that the smoke was a sign that it did.

"It can't hurt to try it," She said with a wary smile. Her hands were trembling as she reached for the bowl, scared of what could happen if the mixture was wrong. But her urge to be human was far greater at the moment than her fear and it kept her reaching and pulling up the bowl to her mouth.

She let out a deep sigh and put the bowl to her lips, taking a small sip and sticking her tongue out while she made a sickened face. She gave Megalo a look and he shrugged right back at her, saying he couldn't help the taste and that it may be normal. She plugged her nose with one hand and gulped down the thick fluid, feeling the burning sensation of it slide down into her body.

"Yuck!" She said loudly, setting the bowl down and covering her mouth in disgust. She felt like she was going to puck, and her stomach was on fire from the horrid mixture she forced it to take.

She gripped her stomach in pain as the heat flared up and spread through her body, quickly enveloping her whole. Megalo looked at her worriedly as she hunched over and groaned in pain. The water around her spun quickly and made a barrier of sorts around her. It lifted her up off the floor and made her spin slightly.

"What's going on?" She asked, opening her eyes to see the water vortex swirling around her erratically.

The water grew closer and closer to her until it was touching her skin, sliding across her and pulling at her. She watched as her tail shrunk on her and turned into a short skirt; her body began to shrink and where her tail was before were to legs that kicked at the water furiously, trying to move from the weird swirling vortex.

Megalo swam over to her quickly, catching her as the vortex suddenly drops her to the floor. Shirahoshi stepped onto the floor carefully, moving her toes around in fascination at the feel of legs, feet, toes, and the floor itself on them. Her smile broke her face and the light enveloped around her as she was all but crying out in joy.

"I have to find Luffy-sama!" She said excitedly, trying to take off running, but ended up falling forward on her face with her arms outstretched. "Owie!" She cried out, putting a hand to her nose as she cried out. She instantly stopped and put on a semi tough face. "No, I don't have time for that."

With the help of Megalo, Shirahoshi got out past all the guards again and past the people, making sure that she wouldn't be seen. At one point she had to resort to climbing into Megalo's mouth and having him carry her around so she wouldn't be seen.

"Luffy-sama!" Shirahoshi called out to the laughing pirate who was standing with his crew.

He turned around hearing his name and froze, seeing Shirahoshi run to him with an arm waving above her head and a bright smile on her face. He blinked a couple times as she stopped in front of him. He furrowed his brows and let out a hum, before walking around her and looking her up and down.

"Shirahoshi-chan!" Sanji shouted with hearts in his eyes.

Shirahoshi felt incredibly nervous as he walked around her, her mind trying to figure out if he likes it or not. But her heart was racing out of her chest at having him look at her so closely too. Luffy crouched by her legs and stared at them, the light bulb in his head finally going off as he found out what was different about her that he couldn't peg before.

He reached out and grabbed the calf on one of her legs, making her squeak loudly and put her hands up by her chest as a shiver coursed up her. She wasn't expected her legs to be so sensitive, but it felt so ticklish to her that she couldn't help at the surprise reaction.

"Luffy-sama!" She whined, looking down at him with a red face and he continued to poke and squeeze at her legs.

"You're human!" He said with a beaming smile, jumping back up to a standing position and looking at her.

Since she was now regular human size, she was just below his chin and had to look slightly up to see into his eyes. He smiled down at her and reached out his arms, wrapping them around her in a tight hug as he laughed innocently. Her face exploded into a red tomato and her face was buried into his shoulder so he couldn't see her embarrassment.

"You're so tiny now!" He laughed again, patting her head while letting her go to show how much shorter she was to him now and not the large mermaid she had been.

"How did you change?" Nami asked, looking at Shirahoshi in amazement.

"A spell!" She told them proudly, feeling happy that she was able to pull it off all on her own. "I wanted to become human so I can go with you guys on your adventures!"

Luffy beamed brightly at the thought of Shirahoshi joining him on his adventures on the sea, but then he frowned. He knew Shirahoshi wouldn't be able to last on the sea with him; not when she is the princess of merman island and cried easily at everything.

"What about your family?" He asked. This could be another problem for her. She was so very attached to her father and her brothers who have doted on her. She wouldn't last being on the seas with them on the grand line and not being able to see her family again for a long time.

Shirahoshi opened her mouth to argue against his reasoning, but her heart squeezed in guilt at the thought of leaving all of them. She knew if she went out to see she had to leave them and not see them for some time. Her fathers scolding voice came into her head as she thought about how he would react to her becoming human right now.

Nami felt bad for the princess who had down casted her face and grew incredibly quiet. She patted her head and gave a warm smile, reassuring the girl who was about to cry. "We'll just turn you back."

"Really?" Shirahoshi said with a smile, feeling hopeful now.

Nami nodded and looked over at Chopper who was looking at Shirahoshi now like she was some phenomenon he wanted to study. "Do you know how to Chopper?"

Chopper shook his head with a pout, feeling horrible that he didn't know how to help Shirahoshi. Nami furrowed her brows in thought and looked over Shirahoshi. She remembered what the princess had told them how she had turned into a human to begin with and snapped her fingers.

"You said it was a spell that turned you right?" Nami asked, smiling even more proudly as Shirahoshi nodded her head. "Well, then it must be in that same place as the spell!"

"Let's go!" Luffy shouted, wrapping an arm around Shirahoshi. He stretched his arm in front of him, grabbing onto a building that was nearby.

"Wait! Luffy!" Nami complained, reaching for her captain.

It was too late though as he rocketed them back towards the castle to find the spell book and the solution to how to turn her back into a mermaid. Shirahoshi screamed loudly and hung onto Luffy tightly as they flew through the air. He latched onto a window and landed on the wall of the castle, smiling at her like it was the best ride she had gotten.

"What's going on?" Fukaboshi called out opening the window.

He stared down blankly at Luffy as he laughed at the prince in fun and then down at the person he was holding tightly and was holding him tightly back. Fukaboshi nearly choked as he realized it was Shirahoshi in Luffy's arms.

"Shirahoshi!" He shouted worriedly, pulling the two of them into the castle quickly. "Wha…"

He stared at his sister who sat on the floor guiltily and looked everywhere but at her brother directly. She moved her legs to the side of her, making it obvious what he was staring at. She began to sweat at the intense gaze on her and the incredulous look on his face that said it wanted an explanation.

"Luffy-sama!" She said quickly, standing up and grabbing his hand. "Let's go!"

Before her brother realized what she was doing and tore his mind away from her human form, she ran down the hallway with Luffy in tow. They didn't stop as he yelled for them and continued to her room that would be a salvation for them. She slammed the doors shut and had Luffy lock them in place.

"Let me get the book," She sighed, climbing onto her bed clumsily and trying to move the fabric around to make it easier for her to move across. She sighed in relief as the book was still on the page she got the spell from. "Thank goodness."

"Found it?" He asked, walking on top of the book and looking down at it cluelessly.

Shirahoshi looked down at the book beneath her, reading it carefully so that she wouldn't miss the solution accidentally. She smiled as she found the answer, and then clamped her mouth shut and a red explosion came from her face.

"What?" Luffy asked, hovering over her shoulder and look at what she saw, his face right next to hers.

Shirahoshi was dying of embarrassment at the solution for the spell, and she was waiting for Luffy to catch on quickly and move away so she wouldn't die from a heart attack.

"A kiss from the one you love?" Luffy asked, leaning back and rubbing his chin. "So your brothers! Or maybe your dad!" He felt like he solved the mystery right there and waited for Shirahoshi to congratulate him, but when she didn't he finally realized the blush on her face. "What?"

He leaned around her and looked her directly in the face, trying to get her to look at him. She had her face covered by her hands, and finally moved her fingers from her eyes to look at him curiously.

"I don't think that's what it means, Luffy-sama." Shirahoshi mumbled quietly to him, making him tilt his head in confusion. "It means someone who isn't in your family. The one you fell in love with."

"Oh!" Luffy said, and then put his hand to his chin again in thought. "Who could it be?"

Shirahoshi flopped onto her bed with a groan at his obliviousness, but Luffy thought it was a game and sat down next to her, trying to help her think about who it was that she was in love with. Luffy frowned as his heart squeezed and felt like it was dropping into his stomach. He didn't like that feeling, but it happened every time he thought of a guy who the mermaid may like.

He didn't want to think that Shirahoshi loved any other guy, but he couldn't understand why he was thinking that way. He glanced over at her and saw her laying there with her eyes closed. He glanced over her body and thought about how it would be if he did take her on his ship with the rest of them and allowed her to go on their adventures.

Luffy reached out and grabbed her hand in curiosity, thinking of how her hand would feel if he grabbed it while it was smaller than his now. Shirahoshi looked up at him and watched in nervousness. He was rubbing his thumb over her hand with a curious look on his face, until he realized she was watching him, and then he smiled goofily at her and dropped her hand.

"Luffy-sama!" She said quickly, using the courage that was built up inside of her now before it disappeared and she lost this chance. "You are the one!"

Luffy tilted his head in confusion at her random confession. He had absolutely no clue what she was talking about, but his heart was beating wildly in his chest.

"y-you're the one that I love!" She shouted out quickly, her fists pumped up and her cheeks flushed.

The room was slient as the confession echoed around the empty space. They stood there in front of the other, waiting for someone to speak. Luffy's cheeks became red as the words finally hi him. His heart felt like it flew into the air and away from him, like it would soar into the sky for him and stay there.

"EH?!" He shouted loudly, eyes wide with shock. He put a hand to his face, trying to stop the blush from crossing along his whole face.

Shirahoshi shifted her feet back and forth beneath her, trying to keep her eyes from him. She wanted to run and hide right now so she wouldn't hear the answer, but her feet were glued to the floor from her own fear. Luffy opened and closed his mouth a couple times, unsure of what to do now that the confession was out there.

"Me?" He mumbled to himself, trying to understand why him off all people. He thought she'd like a merman or a fishman here on the island, but of all people she likes him.

He glanced back up at her and felt his heart thump loudly at the sight of her blushing face and her slim human form. He couldn't help himself as he reached out to her and pulled her to his body, keeping a tight hold on her body and squeezing.

"L-L-Luffy-sama?!" She asked in shock herself now.

He pulled back away from her slightly and looked at her in the eye. Slowly he laid his forehead down on hers and watched her carefully, thinking of his next words before actually saying them.

"Is it bad I want you to stay human now?" He whispered to her.

Her face brightened moreso as she finally saw the blush on his face and felt like her heart jumped out of her chest. She gripped his arms tightly, not wanting to let go of him until she absolutely had to. She shook her head at him and smiled, feeling the same way now that she got the confession out of her. But still she couldn't leave her family behind; especially after all they had done to take care of her in her mother's absence.

Luffy leaned forward and closed the small distance between them, giving her a soft kiss and letting his lips sit there on hers gently. Shirahoshi fluttered her eyes close at the feel of Luffy kissing her. She was in complete and utter joy at what was happening.

He wanted more of her though. He pushed into the kiss and moved his kiss to her bottom lip, making the kiss more fierce and heated than it was the first time. Shirahoshi tried to keep up with him as he changed from her bottom to upper lip and sometimes trailing his tongue along the inside of her bottom lip.

Once they finally broke apart, it was as if they had come back to their world because the problem dropped upon them like a boulder. Shirahoshi gasped as the heat from her lips traveled through her body and settled in her stomach like the first time.

She could feel the water beginning to circle around her daringly. It engulfed her faster this time and changed her back to the size she was before. Her legs were pulled together as the skirt grew longer over It and created her tail once more. Water brimmed her eyes as she stared down at Luffy; she didn't want it to end so soon already.

Luffy smiled at her with a wide smile and jumped up to her hand where she held him up. He pulled on her hair lightly, pulling her head down to him. He kissed her cheek and gave an innocent laugh.

"We'll just change you to a human again when I come back for you!" He told her, holding out his pinky like their first pinky promise they made.

Water dropped from her eyes as she nodded her head and let out a small hum, trying to keep in her cries from the happiness she felt. She touched her pinky to his and wiped away her tears. She should have known that Luffy would be so kind. She couldn't wait for his return and for her to return to being human.

*A couple years later*

"Shirahoshi!" Luffy shouted as his ship rolled into merman island once again.

Shirahoshi smiled and waved back at him, happy that her day to be with him once more had come.