Im Jaehyun (임재현)

--> Born in 1995. A smart student and playful. The new student in MusixArt (JYP) High School from SM Arts High School where he used to be the maknae of EXO. His cousin is Im Nayeon. He idolized Jaebum in GOT7 which happens will be his best friend. Later on, he will discover more about love. But, the question is, who will make him falls head over heels to her? Will there be a happy ending for him?

Park Jihyo (박지효)

--> Born in 1997. Leader of the school’s girl group, TWICE. High-spirit and playful. Roommates to Nayeon and Sana. Unknowingly, Jaehyun caught her eyes ever since she laid her eyes on the new student. She never knew about love. But, she kept a secret that can destroy her loved one's life.

Minatozaki Sana (사나)

--> Born in 1996. Quiet but once she raises her voice, man! Best friends with Tzuyu. Roommates with Nayeon and Jihyo. This Japanese girl will be the first among TWICE to meet Jaehyun besides Nayeon and Dahyun. She did feel something towards Jaehyun but she isn't sure whether it's a mere admiration or love. But will there be a chance for her to experience love?

Im Yoona (임윤아)

--> Born in 1990. Jaehyun’s ex-girlfriend. She is Lee Sooman’s niece (SM Seoul Arts High School). His father is the director board of the school and is one of the richest man in Korea. She is the heir of his father’s business company. There’s a secret behind her breakup with Jaehyun.

Im Nayeon (임나연)

--> Born in 1995. Jaehyun's cousin. Cutie and loving. Dahyun’s girlfriend. She always acted clingy and lovingly towards Jaehyun as she knew what Jaehyun had gone through his life. (That always make Dahyun jealous) She is always beside Jaehyun during his good and bad times.

Mark Tuan (마크)

--> Born in 1993. Eldest in GOT7. Mature. Admiring Sana since they first met. He does hope to be her boyfriend someday. He kind of hate Jaehyun as he felt Sana was attracted to Jaehyun

TWICE (트와이스)

MusixArt High School’s girl group and consists of 9 members:

• Nayeon : (Refer above), Jeongyeon (Nayeon’s girlfriend), Momo (Jaehyun’s fangirl, Dahyun’s girlfriend), Sana (Refer above), Jihyo (Refer above), Mina (Jaehyun’s fangirl, Chaeyoung’s girlfriend), Dahyun (Momo’s girlfriend), Chaeyoung (Mina’s girlfriend), Tzuyu (Sana’s best friend)

GOT7

MusixArt High School’s boy group and consists of 7 members:

• Jaebum (Jaehyun’s best friend), Mark (Refer above), Jinyoung, Jackson (Jaehyun’s and Bambam’s best friend), Youngjae, Bambam, Yugyeom