Night Owl

Luffy noticed that Isha never smiled and also has a depressed look on her face so he tries doing anything he could to make her smile but nothing works when he was about to give up he thought he could sing bink's brew as Luffy does a little dance when he is finished he finally got Isha to smile

After isha joins the crew she was having lunch with the straw hats from a far distance as Franky talks about who protects the sunny and why hatchan wasn't there to guide them to the fishmen island he got hurt while fighting against the marines so as to protect the thousand sunny and the warlord has been protecting the ship for the past two years, 
          Isha hears the whole thing she asked her why would someone who works for the marines help a bunch of pirates, after Franky's story Zoro said So what do we do about the kid? Franky said thanks to Luffy we're stuck with her, Usopp being the chicken that he was, shivers in fear of her Usopp comment she must be an assassin or something, 
          Chopper said she probably was just scared, 
          The straw hats arguing about Isha, except Luffy for who just stares at her for some reason seeing all alone in the corner hugging her knees remind him of how alone he was as a kid, he got up and grabbed a piece of his meat and split it in two pieces as walk over to her knees down to her level as isha look at him with a glare, Luffy clueless of it He spoke in a friendly tone to her, Luffy said Hi I'm Luffy and I know this crew can be crazy but it's lots of fun and here I normally don't share my meat with anyone but you seem hungry so you can have the big piece 
          He said as he gave the bigger piece of meat to Isha who just snatched it out of his hand and gave him a scary death glare, Isha said in a Ice cold cynical tone 
          You can drop the nice guy act if you and your crew want to kill me just get it over with already so you're not just leave me alone, 
          Luffy and the crew look stunned at her, as she walks away from them to the upper deck, the straw hats sigh knowing this is going to hard then they thought but Luffy on the other hand was not going to give up on her

After Luffy punched isha she was knocked out unconscious, While the other straw hats were discussing how did a kid sneak on the Sunny without them knowing, Nami punched Luffy and scolded him for hitting a little girl, Luffy said he was sorry and he didn't know, As Isha was still unconscious as she hears the muffled voices of the straw hats talking, as she started to wake up. She opened her eyes revealing her dark red eyes and huge white pulips, She still feels groggy as hold her head in pain, Just then She hears an extremely cheerful voice in front of her that startled her, Luffy excitedly said Whoa, hey guys look at her eyes they're so cool!
          Isha looks at him with confusion, She looks around at the ship and the crew of strange pirates. 
          Feeling defensive, she lets out a animal like growl at them, 
          Nami walk towards her, telling her they are not going to hurt her, 
          But she didn't believe them she lunged forward with great speed as she grabbed Nami by her long hair, as Nami screamed
          And hold her knife against her cheek, Isha called her a lair, 
          Which surprised the straw hats knowing that she can talk, 
          Then Robin uses her powers to take the knife out of her hand and tell her to let Nami go, isha did what she asked and slowly let Nami, then ask isha a bunch of questions like how did she get on the ship and about her powers, but isha didn't talk she just hissed at them like a cat showing her sharp teeth, then Luffy walk up to her and kneel down ask with a happy smile if she wants to join the crew, as the straw hats groans at what he said, then unexpectedly isha said yes to join the crew without a second thought, which shocked the straw hats at her response while Luffy was happy at her agreeing 
          
          

As the straw hats sail under the sea to fishman island, what they didn't know that they weren't the only ones on the sunny, 
          Frank was about to tell the others kuma was the one who protected the sunny, when they heard loud thunk noise from the storage room. They wonder what it was, nami asks Franky if there was anybody else on the ship beside him and Robin. 
          He answers no, usopp and chopper hug each other in fear think it was a ghost or monster. 
          Luffy got excited, the others went to check it out as
          The noise got louder and louder, 
          The straw hats got battle ready as they headed to the storage room once they got there noticed the noise stopped, sanji asked why did it stop
          Franky leans his ear against the door to hear anything then all of sudden the door broke open sending Franky flying to the ground which shocked the straw hats they slowly turned around to see a glowing pair of eyes from the darkness, then in a blur attack Luffy pinning him the ground he looked up to see a wolf on top of him. Before he could react it grab him about the neck and shake him like a rag doll, sanji and zorro jump in to help their captain but the wolf dodge their attack as it claws at them and bites them, seeing his friends in danger Luffy punch the wolf in face knock it to the ground 
          Then Poof in a puff of smoke, the wolf transformed into a young 8 year old girl which surprised the straw hats realized that wolf was a little girl Luffy felt really bad for punches her

Here's what I picture isha would look like 
          She is an 8 year old little girl, with light tan skin, big dark red eyes with huge white pulips that resemble the full moon after she ate the shape shape fruit, she also light freckles across her cheeks, she also has pointed elf-like ears, she has a mouth full of incredibly sharp teeth, a small nose, she has a small birthmark on right cheek in the shaped of x, She used to had a mop of unkempt deep pink shoulder length hair with bangs that cover that her eyes, after the straw hats and her left fishman island with help from nami and Robin she shaved the left side of her head while leaving the other side messy and at neck length,
          For clothing she wears a dark leather tank top with a thin off-white cloth running through four eyelets to form a x in the center of her chest and brown shorts with white fabric on the edges and a studded spike belt around her waist, she also wears black fuzzy arm warmers and her legs have black bandages wrapped around them leaving her barefoot.
          

When you make your one piece x child reader instead of Y/N you should called her isha

Sorry I haven't posted any ideas for your one piece x child reader fanfic but now I'm back

Thank you for voting on my story! I hope you enjoyed 

Thank you for the vote on Thrilling Tremors! I hope you enjoy it :) 

Even though Yn grew up in wealth and luxury 
          It never felt happy to her, she doesn't show it but yn was lonely she didn't have parental love and affection, Doflamingo was horrible abusive father toward yn, he manipulative her to keep her under his control, and her mother wasn't really in the picture 
          She was always Envious of other kids and their parents it always reminded her what she didn't have like the photo of nami and her mother Bellamere and Shirahoshi and her father,
          She longs to feel a parents love