Fairy tail Natsu x OC x Gray Juvia's sister?!

Quests!

~Gray's pov~

Kaori joined the guild 3 weeks ago and she still hasn't gone on a quest yet.
She helps Mira a fair bit and talks to everyone in the guild, she's friends with everyone already. Surprisingly enough, even Gajeel talks to her.
I'm not surprised though, I mean she is gorgeous.
Everybody seems to love her, Erza offered to buy her cake so they must really be close already. Juvia has been glaring at her ever since she came to the guild though, I think that's my fault, she's her new love rival or whatever. 
Natsu has been watching her nonstop too. Greedy bastard, he doesn't even notice how much Lucy loves him because he's too oblivious.
I hear the guild doors open and I turn to see who it is. Natsu, speak of the idiotic, pyro, flame brained devil.
He waltzes over happily talking to Lucy about something and sits down.

"Oi flamebrain, let's go on a mission. I need some cash" I say to him.
"Same, my rents due and I'm broke" Lucy says laying her head on the table.
"Cool, I'll tell Wendy and Erza" i say and look around but can't seem to find them anywhere.
Natsu and happy run to the request board so Lucy and I follow.
"OHHH THIS ONE HAS FISH!! How about this one!?" Happy screams excited about the fish.
"Did you even read the flyer cat, it's 100 Jewel. There's barely 10 jewel each!" Lucy yells back.
"Well if you need 70,000 jewel we better go on a real hard mission or something." Natsu says. The three of them start ripping at any high paying job available.
"Knock it of you guys, your gonna break the board!" I yell and get in the middle of them. I reach out and pull out a flyer.
"2 million jewel." I read.
Lucy, Natsu and happy's jaw's drop.
"I'll take that as a yes." I walk over to Mira and put the flyer on the bar, catching her attention.
"Going on a mission Gray?" She asks reading the paper.
"Wait." Makarov says holding my shirt. I stand there awkwardly silent for a few seconds before answering
"What's wrong gramps?"
"I said wait!" Gramps says impatiently.
I do as I'm told and wait. All of team Natsu walk over to us and stand there too.
"Why are we waiting gramps?" Natsu asks.
"PESKY BRATS I SAID WAIT?!" He screams.
"Fine." Natsu says sassily.
We all wait silently for a few minutes standing next to the master awkwardly.
The doors creek open and Kaori walks in happily, bounce in her step from the music she's listening to. She walks in and over to levy, sits down and starts talking to her.
"She's going with you" gramps says pointing to Kaori.
"WE WAITED FOR THAT?!?" I shout annoyed.
Natsu and I both look at each other, shooting glares at each other.
Gramps calls her over and explains everything to her, soon after that were are all leaving to go pack.

"I'll call them shortly, be safe you guys!" Mira's happy voice calls out.
"Good luck Kaori!" She calls out again. Kaori turns and waves and smiles a thankful smile.

~Wendy's pov~
"So this is your first quest huh?" Lucy asks Kaori.
"Yeah i suppose so" she awkwardly giggles.
"You'll do fine Kaori-San!" I say happily.
"Aww thank you Wendy, you cutie!" She says happily.
I have only known her for a few weeks but I see Kaori as an older sister, she's so nice and funny.
"So what is the mission about?" She asks.
Gray hand the flyer back to Lucy.
"We have to get an... apple?" Lucy sweat drops.
"An apple? For 2 million jewels!?" Kaori says.
"A magic Apple maybe?" Lucy questions.
"Well soon find out I guess" Carla says.

~time skip to the apple tree~
-Kaori's pov-
We all stand dumbfounded starring up at this tree.
It's so tall I can't see the top of it, it goes through the clouds. There are barely any branches either so this is going to be a challenge.
"Any volunteers?" I joke nervously. Everyone looks at me.
"What?" I ask.
I look at them all for a few seconds then realise what they want.
"It's your first mission so I think you should go" Lucy says.
"Aye" happy agrees.
I look up at the tree and sigh.
"How on earth am I meant to get up there?" I say quietly.
Suddenly i get an idea.
I touch the ground with my right hand and softly say the word 'fall', nobody else seems to of heard it though.
Seconds later the ground starts shaking and a shadow covers team Natsu. Everyone looks up and screams.
"WHAT IS THAT?!" Lucy yells. I run at her and push her out of the way.
A smashing sound echoes through the forest and we all look over to see what fell.
An apple.
A single, tiny, normal apple.
Everyone sweat drops.
"Wow."
"PAY CHECK HERE WE COME!!" Natsu yells and grabs the apple.
Erza swiftly hits him on the head with her armour covered arm.
"Don't bruise the apple you brute!" She yells.
"It's so tiny" Wendy gawks.
I nod.
"At least the price isn't tiny" Lucy says smiling creepily.
Erza walks over and picks up the apple and places it in a bag.
"Time for money!" Lucy says and walks ahead of all of us.

~grays pov~
We had been walking for a while towards the train station when Kaori sneezes.
"Bless you" I say
"Thank you" she says back smiling.
"Are you cold?" I ask. She nods.
"I am actually I'm sorry" she laughs.
I take off my jacket and hand it to her.
"This will keep you warm" I say and smile.
She smiles back and put it on, snuggling into it instantly.
"Thank you very much, are you sure you don't need it?" She asks back.
"Of course not the cold doesn't bother me" I smile at her. We make small talk the rest of the way to the train station.

"So how was you first mission, not to hard I hope" I say.
"It was a weird one but it was pretty good. I'm glad I got to go on it with you guys. Thank you for taking me" she says smiling.
God I love that smile.

~Kaori's pov~
Ever since I got that apple out of the tree I have been freezing. I have needed to sneeze the entire time but managed to contain it until now.
I sneeze and shiver. When did it get this cold?!
Gray blesses me then hands me his jacket. I feel bad taking it from him but he says he will be fine without it. I snuggle into it and take in his intoxicating scent. God damn he smells good. So does Natsu.
Ahh be still my beating heart...