you( Lee Hye Rin)-A high school senior who appeared to be quite and petite. Seem ordinary but you are one the most promising student in prestigous high school. Good in studies, sport(archery), and club. Somehow you had been betrayed in the past making it hard to trust people around you. Even so by writing song, it soothed your lonely and sad soul. It started as a hobby but you getting more into song writting stuff. But you've done so much in school making you confused wether to follow what your heart want or what other people expect.  You also quite active and well known youtube because of random vid and song cover.

myungsoo- one of the member of infinte,a rising halyu star. As L, he kept his cool for fans. But with Lee Hye Rin he felt comfortable to be himself kim myungsoo.

sungjong- he has a  crushed on lee hye rin and treated her nicely. in other word rival for myungsoo.

 other member of infinite and additonal character will be added as the story goes on