You practically grew up alongside your brother Jay's group of friends: Sunghoon, Jungwon, Heeseung, Jake, Sunoo, and Ni-ki. Although you were the youngest at first, you became an indispensable part of their lives.
However, you keep a secret: since your teens, you have been in love with Sunghoon. He has a complicated and toxic relationship with Yuna, and he has always seen you as a little sister... or so he thought.
Everything changes with the arrival of Soobin, who doesn't hesitate to show his interest in you. For the first time, Sunghoon will experience the discomfort of jealousy and will have to face what he really feels for you before it's too late.