Junghyun and Juhyun are twins siblings but in different gender. Just because of Junghyun careless side that he injured himself, Juhyun had to disguise herself and be a boy as Junghyun begging her to be. Genie Athletic High School is a private school that only allowed boys to entered it. Juhyun love her twin brother Junghyun and don't want to crash his hope that he really admired want to be in that school since he was little.

"Just this once only! Help me Juhyun ah~ I'm your only lovely sibling that you have right. Don't you love me? I promise! When I'm okay back I'll be your servant as long as you want. You knew that right I really want to go into that school. This is my only once chance to go into that school that I admired since I was little. I wanna be an athlete...like dad." - Junghyun

As she disguise and manage to enter that school, all that she thought is super different from what she imagine. That school is hell! The people is monster!!! They're super duper crazy!! As she step into the class with the principal of the school, her classmates is being very nice and throwing her a charming smile that she can melt. But as the principal step out of the class... disaster come her way. BTS or Bangtan group is known as a miracle in that school contains 7 boys that had their own advantage. They're smart, handsome, rich and also good at sport. Even the girl school beside their school is crazy about them.

"Isn't you're just too beautiful to be a boy?" 

"Get your stupid girly face out of my sight."

"I hate your face! I hate everything about you!" - Jungkook

Jeon Jungkook is a member of BTS. He hate Junghyun's pretty face so much! It's bother him. Jungkook like treat Junghyun in a bad way but in the same time he also treat Junghyun nice when only there just two of them. Sometimes he thought to himself 'what is this feeling?'

"I don't care what you thought about me. But I'll stay. Nobody can make me leave. Not anyone... not even you, Jeon Jungkook!" - Juhyun