Y/N is a high school girl who wants to be a detective in the future. She is also a fun of BTS. She then decides to start her detective and revealing the deepest secret of BTS. So she asks her rich father to help her meet BTS one on one. Since her father is super rich he gets this done easily.

When Y/N met BTS was excited and then *boom* she revealed a secret of BTS right in front of them shocking BTS. "H...how did you know this", Rm asked but Y/N simply took out her glasses and weared them and then weared the cost which was given to her by her bodyguard. "I'm a future detective and I'm going to start my first case with you", She answered making BTS surprised. "You want to be a detective in future?", Jin asked. "Yep, that's exactly what I said". This time round she placed a letter down and left.

IN THE LETTER

"I'm going to uncover the secret of all your achievement and more like your sexual orientation and others. I'll be back when you least expect me", Rm read the letter to everyone. "She's interesting", Suga said after a little thought. "And mischievous", JK added making the others nod in agreement.

TWO WEEKS LATER

AT Y/N'S SCHOOL

"Y/N you really want to take the exams, are you really going to leave me here", Candy asked. "We'll surely meet each other", Y/N said and hugged her that's when the alarm went off. "Wish me luck", Y/N said and turned to leave. "I wish you fail", candy said. "oh come on, see ya", with that Y/N entered the examination hall.

...****************...

TWO MONTHS LATER

"I'll miss you so much big bro", Y/N said hugging her big brother. "I'll be back soon", he said and patted her slightly on her head. "Now I'm the only one here, I've decided that I'll go to Future Leaders College (Seoul)", she said smiling. "But that's far from home, are you planning to stay in a hostel", her father asked. "Nope, I chose there for a reason" she said smiling mysteriously.

-SOME DAYS LATER-

"Here I am, get ready, here comes the detective queen", Y/N said standing in front of the school. She wore her glasses and walked in majestically. "Good morning everyone, we have a new comer in our midst", the lecturer said calling in Y/N. "Hello, my name is Y/N and I'm sixteen, I'm among the highschool students who were given the opportunity to write the entrance exams ", she introduced herself. "Good, you can take any seat you want, lesson will begin in an hour", the lecturer said and left. Y/N also sat down beside a woman who looked young. "Looks like you are the current youngster here, hi, I'm Sandy and 18 years of age", the lady introduced. "Nice meeting you Sandy", Y/N putting her books and laptop down. "You can take my notes and study ", Sandy said. "No need, I need to finish something so I won't be minding you again", Y/N said and started working. Sandy sat there and stared at Y/N shocked by her personality.

Soon after class was over Y/N started to pack up when a group of guys came to stand in front of Sandy and Y/N. "Any problem", Y/N asked but Sandy gave her a sign to keep quiet. "We have another brat among us, some one who thinks she's cute with those glasses on", One of the guys said making the other guys laugh. Suddenly everyone kept quiet and only one person was laughing. Everyone stared at in shock Y/N as she laughed her heart out. "Thanks for making me laugh, I really needed that but let one thing go into those brains of yours, I don't give a damn about what you think about me but if you dare step I my toes you would live to regret it", Y/N said after laughing and walked away shocking everyone present.

"I didn't understand something's in class today, Sunbae Rm", JK said putting his arms around Rm's shoulder. "Whatever", Rm said rolling his eyes. "I'm starving, what are we going to eat for supper", V asked cutely. "I don't know ye...", "Hello, long time no see", Y/N suddenly came in front of them. "W...what the, how did you know...", "I'm a future detective remember?", she interrupted J-Hope. "Aren't you supposed to be at home or your hostel by now, what are you still doing here", Jimin asked. "I can't go home, and I don't have a hostel", she said sadly. "You don't have a hostel? and why can't you u go home", V asked. "Home is really far from here", Y/N said pouting sadly. "Then...", "Please, let me stay with you guys", she said acting extremely cute with puppy eyes. "But Y...", Rm couldn't complete his sentence as to which he had received a call. "Alright, understood ", Rm said and hanged up. "Who was that", Jin asked frowning slightly. "Boss himself, and yes she's going to stay with us", Rm informed them. "Awwn, thanks", after Y/N said this, bodyguards came in with her luggage. BTS looked at the luggage and then to her. Y/N also smiled sweetly at them.

...****************...

AT BTS MANSION

"Why's YN", Jimin asked. "Here I am", Y/N answered coming downstairs. "Mm, Jin you're such a good chef", Y/N complimented him after taking a bite if the food. "Thanks", Jin said smiling.

LATER

"What are you doing", V asked. "Working", Y/N said typing something's and writing from time to time. "Working?", Rm asked. "At the end if my stay her I will tell you what I found after my investigations", Y/N said with he focus still on what she was doing. "Why the investigation", Suga asked with his attention on his phone. Y/N raised her head to look at Suga as to which this was the first time he had spoken to her. "I'm a huge fan of BTS, I mean the real definition of Legendary Army, but a lot of news have been circulating around about you guys, something like BTS is gay and the rest, I got fed up of hearing such comments and decided to start my first case from you by investigating", Y/N paused and looked at them. "If my investigations proves that the comments are true, I would stop being your fan and I'll hate you for life, not to forget you will lose billions of fans if I really want to destroy you but if I find out that the comments are fake, I'll continue to be your fan and believe me when I say I will make the population of your fans grow drastically", she said the last part with confidence. BTS sat there and stared at her with shock and excitement. "We look forward to your finding detective Y/N", JK said smiling. "Hope I answered correctly", Y/N asked Suga who had already turned to leave. "Mm", he answered without looking at her and left.

"Don't mi...", "I know that he is normally like this when he's grandma's death anniversary is near", Y/N said. "W...what y ...", "Future Detective", Y/N interrupted Jimin and continued working with a mischievous smile. What they didn't know was that Suga was standing in the staircase and had heard everything. With an unreadable expression he turned and went upstairs.

THE NEXT DAY

"A brand new day", J hope said as he came downstairs with the others except Suga. "Where's Suga", Jin asked. "He said her would be joining us soon", J hope replied. They all paused when they saw Y/N sitting there with her glasses on reading. V then made a sign for them to go downstairs quietly. "Good morning", Y/N said without even looking their way immediate they took a step. How did you know", Jimin asked shocked by her mischievous attitude. "I heard your foot steps", she said and closed the book. "You seem prepared for school, when did you wake up", Rm asked. "It's a habit, I wake up very early since I need to go for morning class", Y/N Informed them parking up her things. "Then it's good that I prepared breakfast early, you should eat before going", Jun suggested as they made their way to the dining room.

SOME MINUTES LATER

"What the...", Jimin exclaimed. "Oh?, looks like your insomnia has gotten worse", Y/N said to Suga whose eyes were now swollen. BTS then turned to her with shock and a little fear. Suga looked at her for a sec and sat down ignoring her. "How old are you", Jungkook asked with a little frown. Y/N stopped eating and turned to look at him. "I'm sixteen, why?", Y/N asked arching her brows. "Stop being so mischievous, bow about you stop shocking as too much", Jimin told her looking very uneasy. "Y/N simply stared at him quietly without shaking. "Y/N, we can see how curious, interesting and adventurous you are but the way you are being mischievous is making some of us feel really uneasy", J hope told her being totally honest. The girl had scared them too much and now her mischievous character makes it more worse. Y/N simply smiled sweetly and took a little book. She then ticked something and place the book back into her bag. "I like honest people, and my bro always tells me to test the honesty of the people around me, I'm actually the mischievous type making me gain both enemies and friends, me being extra mischievous was to test you guys and see if you would come clean about how you feel about my attitude and well, you passed the test", Y/N finally revealed this to them shocking them to the core.

"Looks like I made a good choice to be an Army", Y/N said cutely this time round making BTS wonder where the mischievous girl had vanished to. Suga in the other hand quietly stared at her with a little smile playing at the corner of his lips.

...****************...

Immediately Y/N walked into the class, all eyes were on her. "Good morning Sandy", Y/N greeted and sat down. "Good morning, Y/N, we have a teat today, Le me get my not so that...", "Thanks Sandy", Y/N interrupted her. "I'll be fine", she reassured her and started writing some things. Some minutes later the lecturer walked in and the class rep shared the test papers to everyone. Y/N looked at the papers and stared to answer them with ease while the others were finding it difficult. "40, minutes to stop work", the lecturer reminded them when suddenly people started whispering. "What's all the whispering about" the lecturer asked getting pissed off. "Why was a dumb head like Y/N brought to this class when she can't even write a test" a guy asked. "Y/N, hey", the lecturer woke her up totally irritated. "Why are you sleeping, don't you know that this is a really important test", the lecturer shouted at her making the others giggle. "Can't I sleep when I'm done", Y/N asked making the giggling seize.