Do you have any idea how to live your life with your brother who cannot just leave you alone and always demand to be by your side 24 hours per 7 days? If you were Choi Sooyoung, you would probably feel like killing yourself. As a 16 year old girl, she also wants to experience the romantic high school life. She needs to do something. She needs to distract her brother's attention from her.

But how?

Ah, she got an amazing idea!

Her brother doesn't allow her to have a boyfriend, even though she is desperate to have one. So, all she has to do now is finding a girlfriend for her brother so he will let her date her crush, Zhang Yixing.

So, the idea is...

Asking Stephanie Hwang aka her best friend to tame her brother and trap him in her heart.

Choi Sooyoung, you're a genius!