Kim Jihyun was a 20 years old ordinary college student in Seoul who had been single her whole life. Her two older brothers - Kim Seokjin and Kim Namjoon, intend to change that by sending out her old love letters to 5 boys she had/has a crush on.  Life has never been the same since then.

"Roles have been reversed." A smirk plastered on her lips as she held the knife against his neck.    He was given a mission to go find her and end her life. Little did he know, she was someone you shouldn't mess around with.

In which Jeongguk drags his girlfriend to workout on Saturday morning.

Yewan Lim was beyond shocked to find herself had a brother. Moreover it's  him, the pretty boy who once helped her, Jeon Jeongguk. 

Love was never part of the gameplan.