Han Jisung is your enemy, you hate each other and always been fighting. You always tease each other and some people say that maybe you aren't just friends..

One day you wake up at 7 am a little dizzy and realize that you woke up 1 hour after your alarm clock time, which is strange since your cell phone woke up at 7 am. The room is totally different from yours. You look in the mirror and realize that you look like jisung, or rather, you are jisung, and jisung is probably you now.