Kim Taeyeon  - the little sister of Taeyoung, she's twenty years old and she's just a ball of sunshine. She's very sweet and nice that she'll do anything to make her big sister proud. She's heartbroken when she found out that her sister was dead. She couldn't believe it and then she found out by her sister's manager, Hyung-sik that she had to pretend to be her which sounded more crazy as she thought about it but she then thought about her sister and she couldn't resist. She loves to sing but she usually just sings when she's alone or in the shower. She never performs on stage ever since she was five. She gets panic attacks whenever she heards screaming. She always wear a rubberband around her wrists for a reason that no one knows. She gets nervous easily especially with new people she doesn't know. Can she handle all this struggle of her sister's life? How will she survive when she realized that her sister has a boyfriend?

"How can I do all this when she's gone? This is just pure insanity."

Kim Taeyoung - Taeyeon's big sister now supposely dead, she's twenty-three and she's a total different person when she's with her sister. When she's with her family, she's as sweet as Taeyeon and loves to see her little sister smiling but when it comes to the idol life, she becomes the worst nightmare for most of them. She's y, uncaring and just cares about herself. She became cocky as she started to do drink a lot more, especially with her boyfriend. She never really liked him. She just used his popularity for herself and for . She doesn't care about anybody but herself when it comes to her idol life until she got into that car accident that ended her life.

Kwon Jiyong – known as G-Dragon and Taeyoung's boyfriend who loves her senseless and would do anything for her. He's a solo artist as well as BigBang's leader and a sweetheart. He met Taeyoung  in one of the music shows and was mesmorized at how beautiful her voice was that he instantly fell for her. They started to go out in secret at first but then they decided to come out and tell their friends and company that they were together. He didn't mind and she didn't also. He can be cold and blunt at times but he has a big heart of gold when you get to know him. But then one day changed his perspective of Taeyoung. She was a total different person which got him more curious. Things that Taeyoung would never do yet he started to fall even harder for her.

"I didn't know she liked doing these kinds of things. Interesting."

Kim Jongsuk - he's a very successful model and actor. He's very cold and doesn't talk much. He judges too quickly. He never liked Taeyoung because of how useless her songs were and how ty she would dress up like. He hated girls like that to the core. He has a past that explained his reason for hating girls like that yet that will revealed later on. He loves to dance and that's one of the reasons why he joined this company. Yet, he started to notice her watching him when he's practicing his lines or acting on the spot since they were featured on a drama. At first, it annoyed him but then he noticed something he didn't realize, she was actually enjoying his performance. Before, she would just look at disgust and walk off but lately, she had been very supportive and admiring him which got him more curious. This wasn't the Taeyoung he knew. This was a total different personality he didn't see from her.

"Is that really Taeyoung? It can't be, can it?"

Park Jeong-su - also known as Leeteuk; one of Taeyeon's best friend from home that finally was getting started with his career, he has always been there for her and her sister but he mostly cared about Taeyeon a bit more unlike her big sister who was nothing but a to him. He didn't care. All he cared about Taeyeon. They had been best friends since they were babies til now. When he found out about the situation, he freaked out. He would always be by her side, take her to lunch, always wait for her to take her back to her apartment. He was like a bodyguard to her which annoyed G-Dragon. He just wanted to be there for Taeyeon since she didn't belong in this kind of world. The idol life wasn't for someone like her who was fragile and small.

"She doesn't know anything about this life. How will she be able to survive all this? She can't! She's not used to this!"

Park Hyung-sik - he is Taeyoung's manager who survived the crash yet he knew that this was no accident. He panicked when he found out that she passed away. He panicked that he kept this all a secret, only him and Taeyeon knew about this. He was determined to keep it that way until he could figure something out. He took the dead body somewhere where she could be safe until he thought of something but for the meantime, he asked Taeyeon to be her. He knew that she would be off about it but it was just for the meantime. He would always console her and teach her the ways of the idol. He knew that this was just too much for her but she was the only hope he had.

"I hope this will work."

Hyuna - one of Taeyoung's best friend, she's very wild yet funny in a most adorable way. She's also a well known idol. She had always admired Taeyoung's singing voice that she begged her to teach her but she would always refuse. Taeyoung would only be nice to her  because it reminded her of her little sister, Taeyeon. They were so alike that she could just see her in Hyuna so she wasn't that y towards her, actually she was pretty fond of her. She was happy yet she started to noticed Taeyoung's actions to be quite the oppose which was unlike her. It surprised her but she really started to like her more like a sister because of it.

"She's like a sister to me. She's my family that I'll always be there for."