Jungkook's POV:

"What!" We all say in unison

"Well we can get Tilly to....

Perform with you tonight as a mystery appearance!" Our manager says

Our jaws drop and it takes a while before we were able to process this. Omg Tilly is going to freak when she hears this, I can't believe my girlfriend is going to perform with us tonight!

"But sir won't people wonder why there is a girl dancing with us?" Namjoon says

"Ah Namjoon that's when a disguise will come in handy -" The manager says but was rudely interrupted.

"What the F*** do you mean by disguise?" Yoongi blurts out and the manager gives him such a stare that could pierce through anything.

"As I was saying we need to cover up the fact that Tilly is a girl" he says

"So basically we have to dress her up as a guy?" Taehyung smiles

"Precisely! Now go off and keep practicing we have a big show planned for tonight" our managers says as we all bow except for Yoongi. Jin slaps the back of his head as we exit his room and scolds him. It doesn't take long to explain to Tilly about tonight's concert and her reaction was priceless so glad I have it now on my private instagram.

"So your telling me that I get to perform with you guys tonight?!" Tilly squeals

"Yes and if you impress our manager maybe even the rest of the tour" Jimin says

"Awesome I have the best friends in the world!" Tilly says, I am so happy to see her like this happy and cute.

We all come in for a group hug and selfie, and Namjoon almost manages to break the selfie stick because of his habits of breaking things. When will he ever get out of the habit of breaking everything, ehh I guess we all have our quirks that make us special. We take the bus back to the hotel and split off to our rooms.

Hoseok's POV:

"Hey Jimin you think Taehyung's ok?" I say

"Honestly he hasn't been himself lately what do think the problem is?" I say

"I don't but I'm going to find out!" Jimin says and runs off, I feel a vibration in my pocket and grab my phone. It was a message from my sister'

Jiwoo: Hey Hobi! What time is the concert tonight?

Hey Jiwoo the concerts @ 6:00pm at Staples Centre why? : Hobi

Jiwoo: Because I wanted to come tonight after all you are my brother

But you are extremely busy with your modelling career: Hobi

Jiwoo: I will sacrifice sometime to see my little bro

You're the best Jiwoo! See you tonight: Hobi

~Hobi has left the chat~

Jimin's POV:

"Hey Tae wait up!" I say panting

"What do you want?" He replies coldly

"Geez Tae come to my room we need to talk" I say and grab his arm, I manage to drag him to my room and get him to settle down.

"What has been up with you lately? Are you ok? Some of us are worried for you Taehyung" I say

"Nothing's wrong Jimin just leave me alone!" He says

"I'm not going to ask again Taehyung, WHAT IS WRONG?" I shout

"NOTHING JIMIN CAN'T I JUST HAVE SOME ME TIME? SERIOUSLY I ALWAYS HAVE TO DEAL WITH HEARTACHE IN HIGH SCHOOL WITH MINHAE, IN MY TRAINEE YEARS WITH KIMMY AND NOW WITH TILLY!" Taehyung says and realizes he said way too much.

"Taehyung is that really the problem?" I ask quietly comforting him on the bed while he has his face somewhere in the pillow, he brings his head up from the pillow and nods.

"I know it sounds harsh but you have to get over her if you don't want to hurt Jung kook, I am pretty sure there is another alien somewhere on this planet waiting to meet you" I say to him, he smiles and hugs me.

*CURRENT TIME IS 5:00PM

Tilly's POV:

I actually can't get over the fact that I am performing with the guys tonight! Wait what am I going to wear?! This is a momentous occasion. I rummage through my luggage and hear a sudden knock on the door, I check to see who it was and see Yoongi at the door. He grabs my hand and drags me with him, this is so embarrassing when we split off I changed into my PJ's and now Yoongi is taking me somewhere when I'm in my PJ's what's next?

"Yoongi what is going on?" I ask

"We have to go now to get ready for the concert" he replies

"Is this what you always do when you have to take someone somewhere?" I ask

"Yeah why?" he asks

"It's just you could be a teensy bit more gentile, a tip for next time" I say and he smirks at me

"Well too bad now how about next you don't wear your PJ's unless you aren't embarrassed in front of the guys" he says and chuckles, so not funny.

We arrive at Staples centre once again and Yoongi shows me the way to the change rooms, I walk in to see every one of the boys laughing at me.

"Don't even ask" I say and glare at them

"Ok" they say unison

"Now we have to make you look like a guy!" Jin says

"WHAT?!" I scream

"Yeh we can't let anyone know we have a girl performing with us on stage" Jimin says

"In fact they can't know who you are full stop" Namjoon says

"Here I thought that this would be fun"" I say monotone

This'll be fun I thought, the throw me a pair of white men's ripped jeans and an oversized black t-shirt to change into. I finish changing into these clothes and show the guys, they give me a thumbs up.

"How are we going to hide the fact that she has blonde hair and not Korean?" Taehyung says

"Tilly do you mind if we dye your hair a different colour?" Jungkook says

"Honestly I don't mind, what colour tho?" I ask

"Not Today purple" Jimin suggests, purple interesting I'm willing to give it a go, I nod.

After my hair was finally done it looked pretty nice, the makeup artist put a bunch of products on my face to try and make me look like a Korean boy. She worked her magic tho it was pretty convincing, I had to add my coloured contacts to match with the rest of BTS. My hair was the problem I have such long hair what was going to happen to it, the hair stylist managed to style my hair with a lot of bobby pins and clips into a cute hairstyle with bangs. Now I looked like a guy. BTS haven't seen me since I got dressed so their reactions will be key.

I walk into their dressing room and their jaws dropped as soon as they saw me;

"What do you think?" I ask

"Yo assistant get me something to drink" Yoongi says

"Bruh I'm Tilly not your assistant" I say making him look shocked.

"You look like a legit guy!" Namjoon said

"Hurry up we're about to perform" Hoseok says

*Backstage

"We now welcome to the stage B...T...S!" the speakers announce, we run on stage and we hear gasps and cheering. We start by performing IDOL again, I feel as if all eyes are on me and that isn't a good feeling.

Jungkook's POV:

I really hope Tilly isn't too nervous right now even if she isn't singing she is dancing in front of thousands of ARMY's. It looks like she is going well so far, as we move on song after song Tilly becomes more confident. I feel as if that I can't focus, Tilly is just so amazing and she truly has a talent for dancing. The concert continues and soon enough, we performed our last song for the night, DNA. This is Tilly's favourite song so I am pumped to see her perform it. My whistle tunes in and I see Tilly's face light up. KIM NAMJOON, KIM SEOKJIN, MIN YOONGI, JUNG HOSEOK, PARK JIMIN, KIM TAEHYUNG, JEON JUNGKOOK, BTS!!!!! I hear ARMY scream. The guys and I put all of our remaining effort into making our last song count the most for Tilly.

"DNA!" Hoseok sings as the song comes to an end. I hear ARMY scream their lungs out and we say our thankyous and goodbyes to our ARMY and we head backstage. We all hydrate our exhausted bodies with cold water but then, I see Tilly. I immediately stand up and bolt towards my girlfriend. She spots me and runs to me as well. When we finally meet in the middle, I gave her the biggest hug managing to lift her into the air and spin her around. I then carried her bridal style to meet up with the rest of the guys. We finish our hugging session with a deep kiss that I wish could last forever.

"EWWW" Taehyung screams

"WHAT THE F*** GUYS! You look so gay! Get a room!" Yoongi shouts

I just remembered that Tilly was dressed up as a guy...

Authors Note:

Hey guys almost 1K reads thanks so much! Sorry for the long chapter but hope you enjoyed 'Unexpected Appearance'. And shout out to btsarmy226 for helping me with editing and story line ideas!

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-iHeartRomania05