Seulgi has a crush on Jongin since their school days. Does he feel the same? Even if he does, there are so many problems to solve for them two.  

Kang Seulgi. That's her name. She's an ordinary girl, who some might even envy. She has a lot of friends and goes to the best school in Korea after all. But there's just one thing that could break her identity in an instant- her past. The Fighters. All she wants is to lock the door to her past and hide the keys. But someone is determined to unlock her past and remind her of it.