is night time at krystal and sehun' house. Krystal was looking at the ceiling with sehun is sleeping. Then suddenly sehun feel a kiss on his lip and open his eyes and saw krystal

 sehun: w..what are you doing?

 Krystal said nothing but just kiss him. Sehun close his eyes and reply to the kiss. Krystal slowly broke the kiss and went on to the neck

 sehun: k...krystal 

 krystal: oppa give it to me. I need it  

 Sehun: k..krystal 

 sehun look at Krystal's eyes and turn her around and kiss her. Taking their clothes off but In one  shift sehun enter her

 krystal: a..ah oppa 

 sehun trust in harder and faster 

 krystal: ah.... 

Sehun shot his seed deep into krystal. In one night all positions they have done it. 

A few weeks later 

 sehun come home late and krystal went to hug sehun 

 krystal: oppa 

 sehun: I'm staying at suzy's house tonight 

 sehun take his clothes and was about to leave her alone. Krystal know something will happen to sehun and Suzy. 

 Krystal: why?

 Sehun: krystal you are my little sister this is wrong. I feel guilty for doing this to my own little sister. Sehun left the door and krystal just stand there thinking. 

 Krystal: maybe he is right. I love him but he don't love me as a women 

 krystal slowly walk to her bed and lay down crying

 mom: sehun go call krystal 

 sehun walk to their room and saw krystal sitting on the bed staring in space

 sehun: mom called us 

 krystal turn to sehun and nodded. Krystal walk down the ladder and walk pass sehun. Sehun notice her black circle and red puff eyes 

 mom: krystal what happen to your eyes? 

 Krystal: I..I have been studying 

 mom: ok honey sleep early 

 krystal: umm 

 krystal ate her breakfast and walk out of the door while sehun follow her. 

 Suzy: oppa tonight at my house 

 sehun: s..sure 

 krystal didn't turn back but keep on going forward 

 Luna: krystal KRYSTAL 

 krystal turn to Luna 

 luna: what happen to you? You look awful 

 krystal: I'm fine I'm just stay up late last night for homework 

 Luna: oh 

 Victoria: stal do you want to come to the club tonight? 

 Krystal: no I'm tired 

 Sulli: ok if you suddenly change your mind call me 

krystal nodded 

 at home 

 sehun was about to leave when he saw krystal in a tight dress 

 sehun: w..where are you going? 

 Krystal just turn to sehun and stare 

 Amber: STAL 

 krystal turn to Amber and walk to her. Sehun decide to follow her instead of going over to suzy's house

 at the club 

 sehun saw krystal drinking and dancing with a man. Sehun saw that man touching krystal so he went to pull krystal away from him and went into the bathroom

 krystal: o..oppa what are you doing here? 

 Krystal was drunk 

 sehun: krystal why are you here? 

 Krystal lean closer to sehun and kiss him. At that night they are connected again 

 After few days after that day 

 krystal and sehun is in their room when krystal kiss him sehun push her away really hard 

 sehun: don't I have a girlfriend and is Suzy. You are my sister 

krystal: oppa 

 sehun: l don't love you I love Suzy 

 Krystal's heart broke into pieces when she heard that and a few minutes later sehun is out of the room. 

 Mom: KRYSTAL you have been inside of the bathroom for 3 hours already

 sehun: mom 

 mom: KRYSTAL KRYSTAL 

 sehun heard the water running inside the bathroom 

 sehun: mom I'm going to suzy's house 

 mom: ok 

 sehun lefted. Mom is starting to feel something is happen inside of the bathroom so she tried to break the door. Mom called sehun but his phone is off so mom just kick the door as hard as she can and open the door. Mom saw the bath water is coming out of the tub and krystal was under the water

 mom: KRYSTAL 

 mom  bring krystal to the hospital and is in the operation room. 

Doctor: she is very weak and is in coma 

 A few days later when sehun went to school with Suzy. He haven't been home for days because he don't want to face krystal 

 Amber: have you seen krystal? 

 Sehun: I don't live at home I live with Suzy

 Amber: do you know where is she? I tried to call her but she didn't answer and I haven't seen her for days now 

 sehun: call mom 

 amer: she didn't answer either 

at class sehun suddenly was dismissed early 

 sehun: what happen? 

 Doctor: hello is this Krystal's brother and her mother's son 

 sehun: yes 

 doctor: I'm sorry to say this but your sister right now is in the hospital and she is in coma 

 sehun drop his phone and run to the hospital and saw her mom with krystal

 mom: where were you? 

 Sehun: I was at suzy's house 

 mom: why do you need to care about Suzy more? 

 Sehun: mom she is my girlfriend 

 mom: sehun I know this is shocking but I want to tell you. Krystal isn't your real sister she was one of my best friends's daughter who die when krystal was born. Her last wish to see you guys marry. I know you love Suzy but for krystal please 

 sehun: mom I don't want to marry her 

 mom: please sehun I beg you. 

 Sehun: MOM I don't want to 

 doctor: I'm coming to check on krystal. She is fine and she will wake up soon 

 mom: thank you 

when krystal wake up she found out she will be marrying sehun, she was happy but not sehun. Sehun have been ignoring krystal and is making krystal annoying 

krystal: oppa 

 sehun: don't talk to me 

 krystal: if you don't want to marry me then tell me

 sehun: yes krystal I don't love you the way I love  suzy 

 krystal look at sehun while sehun' tears slowly fall 

 krystal: fine I will talk to mom 

 sehun: s..stal 

 krystal: I know you see me as your own little sister. I know you love her. I'm letting you go I know nothing will change your mind

 after the marriage was cancel sehun have visit Suzy a lot and left krystal home all by her self when mom isn't home 

 sehun: I'm sorry 

 krystal: I don't need your sorrys just go to Suzy she will make you happy right? 

 Sehun: she does 

mom: honey where is sehun? 

 Krystal: at suzy's house 

 mom: he is there everyday 

Tomorrow morning 

 sehun came home and saw krystal sitting on the chair staring at the tv 

 sehun: I'm home 

 mom: oh here you are 

 sehun: nae 

 Vic: STAL 

 when krystal heard her name she walk up stairs and went to her room 

 sehun: Vic noona is here

 mom: yeah I know when both of us are not home krystal just bored and scared so I want Vic to stay with her. 

Hearing that make sehun feel guilty 

 mom: I'm going to work 

 Vic: stal do you want to do any thing or go anywhere??

 Krystal: no I want to stay home 

 Vic: you have locked yourself home for days now 

 krystal: I feel safer at home then outside 

 Vic: don't you get bored 

 krystal: no 

 at night time 

 Vic fell asleep while krystal was watching tv in her room. Krystal was feeling weird so she buy a pregnancy test. She is pregnant what is she going to do? Tell sehun or abort it.

krystal decide to keep it as a secret. Later a month krystal tell her mom and she was happy but krystal say she will move out because she don't want sehun to know.

 Vic: stal