• Siwon Choi - a professional photographer/videographer. He is well-known in that field and in demand in the country. He specialized in events particularly in weddings. A successful in his business and also offered a job to be a lecturer in Seoul National Univ. where he is an alumni. His father is a renowned photographer in the country and because of that he had a hard time to be out of the shadow of his father.

• Tiffany Hwang - a senior college student of Seoul National University. She study music majoring in cello.  A lady who has a lot of passion in music but from the family of surgeons and owning the biggest hospital in South Korea. By choosing music over medicine, her family did not like it to the point her father disowned her. Through that she needs to prove something and support herself on her own.

• Taeyeon Kim - Tiffany's best friend and classmate. She major in Composition, dreaming to become the first ever Korean film musi composer just like John Williams and a like. With Tiffany, they dream to become a world-class artist someday. A very supportive friend and the one who helped Tiffany to have home. 

• Sooyoung Choi - also Tiffany's friend and classmate. She major in Viola. A very talkative and funny person. She consider herself as a lazy musician but a very skillfull. She came from the family of musicians that often times Tiffany get jealous of. She is also the source of every information, the latest news and gossip in the campus.

• Kris Hwang - the younger brother of Tiffany. The trouble maker in the family but has a very high IQ. He study in the same campus with Tiffany, taking up Medicine. But like her big sister, he wants to find his passion in photography and as usual the family doesn't want it. He is the fanboy of Siwon.

• Irene Hwang - the younger sister of Tiffany. They believe she is the only hope of the family to continie the legacy in Medicine. Just like her brother, she is also a major in Medicine. Often times called the "favorite child" but the truth is she doesn't like what she's doing. Struggling from obeying and expectations of the family, she wants to give up and to pursue her secret passion which is ballet dancing. She admire her big sister so much and have a love-hate relationship with Kris.

• Taecyeon Ok - classmate of Tiffany majoring in piano. He will do everything just to be noticed by Tiffany.

• Yoona Choi - the younger sister of Siwon. She lost her ability to talk due to traumatic experience from the past. She expresser herself through paintings and other media of arts, without a formal training. But in the end, she will discover her voice again that Siwon will never imagine.