jungkook,krystal,and sulli were childhood best friends. Krystal have a crush on jungkook and told sulli about it but after a week she found out that jungkook and sulli is dating. Sulli say she is sorry but krystal say is ok and congrats them. After sulli and jungkook start dating, they have left krystal out of alot of stuff. They start to not talk to each other and not having time together. After a month krystal suddenly broke the new of moving a school to her class. 

 Mr. Kim: ok guys today is krystal's last day in school. 

 Eunji: why~~ 

 almost all the girls go up to krystal 

 Eunji: why do you have to leave?

 Krystal: i'm sorry unnie 

 Eunji: but remember to come back and visit me 

 krystal: unnie my new school is near your house 

 Eunji: you mean Seoul Music School?!

 Krystal: yeah i got in 

 eunji: congrats 

 Bomi: i know you were going to get into that school 

 Sulli and jungkook suddenly come up to krystal with a mad face

 sulli: why didn't you tell me you were going to change school?! 

 Jungkook: calm down 

 sulli: why should i?! My best friend is going to move and not tell me !

 Krystal: i don't feel like i'm your best friend at all 

 sulli: what do you mean?

 Krystal: for one month you guys left me all alone and not care about me at all. At lunch everytime i eat alone because you guys say you can't hang out with me 

 sulli: we..

 Krystal: this time i move i want to forget you guys and feel like we have never met 

 jungkook:do you have to throw away our 17 years old friendship?

 krystal: i wasn't the one who throw thwm away but it was you guys 

 krystal walk out of the door 

 After a month 

 Sulli's class was gathered in a small room 

 Mr. Kim: so today we are here is because we have a old friend that is coming back and they will teach us a lesson 

 Seoul Music School's student come into the room 

 Eunji: krystal?! 

 Bomi: OMG what happen to your hair?

 Mr. Kim: today we have krystal and some other students to teach us about their school. So krystal tell us how do you feel to be back?

 Krystal: it feels weird and i feel like the school got alot smaller 

 Mr. Kim: so how was you school?

 Krystal: very good and nice,my classmates are very nice and fun to hang out with 

 Mr. Kim: so we have krystal's teacher, Mrs. Kwon here 

 Ms.Kwon: hello everyone i'm krystal and these student's teacher. I was very glad to have krystal as my student and she is very talented. On the first week she won a first place and now for one month she have won over 10 battles. 

 Mr. Kim: so what do you guys have for us?

 Ms.Kwon: we are going to show you guys how hard working are my student and some dances.

 Mr. Kim: ok 

Ms.Kwon: so we are here for another thing. We are looking for some students to join our training 

 After finishing sulli's class they went to Jungkook's class 

Jin: krystal?! 

 Ms.Kwon: so we are here to get some students to be picked to join our training. We need student who can either sing or dance very well. By mean very well we will show you guys my student's dance 

 ( the first girl is krystal) 

 jimin: wow 

 Ms.Kwon: so the training start on saturday and we already pick the students from next class. Eunji,bomi,LE,Hyuna,Choa,and joy that's for the girls. The boys are Taecyeon,Taeyang,Yoseob,Sungjae,Key, and Minho. So today we will pick from your class but i have already heard of a group that i want to be in my class is BTS. For the girls are Wendy,Namjoo,Min,Fei,Jia,and Hani. All of the people that i said have to arrive at Seoul Music School at 6:30 and krystal will be there at 6:40, who every was later will be kicked out 

 At Seoul Music School 

 All of the 25 students enter the school 

 Bomi: OH MY GOD is so BIG!! 

 After a while krystal arrived 

 Eunji: krystal!!

 Krystal: hello unnie. So today we will start our first class which is dancing but first i will take you guys to your rooms and lockers and also practice room. 

 Krystal lead them to the dorms

 krystal: Boys on this side and girls on this side. They already have your name on it and here is three rules about the dorms. We can go to other people's dorm but not pass 12, you all have to wake up before 8, and you all have to keep your rooms clean. So all of you go find your rooms first . 

 Eunji,bomi,and hyuna one room. LE, Choa,and joy one room. Taecyeon,taeyang,yoseob one room. Sungjae,key,and minho one room. Wendy,namjoo,and hani one room. Fei, jia,and min one room. Jin,Rap Mon,and Suga one room. V,Jimin,Jungkook,and Jhope one room. 

 Krystal: ok now we will go to our lockers. Before and after practice we all need to change into dance clothes and shoes. Boys will change in the left door and girls in the right door. We all have our own practice room for each dormmates. So today for two hour we will get the dorms ready, 20 minutes to change,and 5 hours of practice. 

 At the dorm 

 krystal's dorm is in front of Jungkook's dorm 

 Eunji: i will sleep here 

 Bomi: this is very nice 

 Krystal: do you guys love here?

 Hyuna: of course 

 krystal: so all of you guys will be stay in the dorm most times and you guys can go home when is holiday or long breaks. You guys can go out anytime but have to be back by 10 

Ms.Kwon: so i'm sure krystal have show you guys the school. So today we will have a dance and singing lesson. For dancing we have to stretch out our legs and back for singing we have to open our vocals  

 After staying in Seoul Music School for one month, one day BTS enter krystal's practice room 

 Krystal: what are you guys doing here? 

 Rap Mon: we want you to help us with something

 krystal: what is it?

 Rap Mon: i have wrote a song and we want you to make the music and members part, the other thing is can you play the piano for our cover fool 

 krystal: what is the lyrics?

 Rap Mon hand krystal the lyrics and krystal start reading it 

 krystal: this song is about the lonely whale in the world?

 Rap Mon: yeah i want to tell the world about her story 

 krystal: do you have a pencil?

 Rap Mon hand krystal a pencil. Krystal start humming the music for the song and start to divide the lyrics to member's parts.

 Krystal: ok meet me at the piano room on sunday 

 Rap Mon: about the cover...

 Krystal: i will think about it 

 Vic then come in 

 Vic: oh good you guys are here too. Tonight we will have a celebration at the beach 

 krystal: for what?

 Vic: Ms. Kwon is getting married and she want to celebrate with us 

 krystal: she is?! 

 Vic: yeah so arrive at the beach at 7 

 krystal: got it 

 At 7 

 krystal come to the beach with a white shirt and shorts 

 Luna: haven't been to the beach for a long time and look is the sunset 

 krystal look at the sunset and close her eyes and inhale deeply 

 krystal: is refreashing 

 Vic: it is 

 krystal then saw sulli and BTS. Sulli and jungkook was holding hands and talking to each other 

 V: is beautiful 

 BTS was walking behind krystal while krystal is walking behind vic,luna,and amber. Krystal watch luna and vic having fun 

 Amber: come on krystal 

 krystal smile and run to amber and hop onto her back and spin around in circles. The moment make jungkook and sulli remember the moment they had with krystal. Krystal then get off of Amber's back and look at the