Youngjae was depressed after the death of his mother and older brother. After the death of his mother and older brother, Youngjae and his father moved to Gangwon-do. One day, Youngjae attempted suicide but was stopped by a girl. The girl is Kim Namjoo. Since the incident Youngjae interested in the girl. Lim NaYoung Namjoo is a good friend since childhood. Song Mino gregarious and defend Youngjae

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Main Character

Choi YoungJae
-16 years old
- he was cheerful but after the death of his mother and brother he became depressed.
- Moved to Gangwon-do
- New student at Jeonguk Multi Art School .
- friends with Mino , JInwoo & Seunghoon
- Feuding with Yuhyeong , Yugyeom & Suga
- Has a feelings to namjoo

Kim NamJoo
- 16 years old
- Cheerful , Hyperactive , Funny
- Student at Jeonguk Multi Art School
- Friends with Nayoung , Sohye & Naeun
- Feuding with Yuna , Hayoung & Sejeong
- Has a feelings to Youngjae
- Vice President of Sing&Dance Club

Lim NaYoung
- 16 years old
- Kind , Supportive Namjoo , funny
-  Always helps namjoo
- Student at Jeonguk Multi Art School
-Has a feelings to Mino

Song MiNo
- 16 years Old
- Kind , Hyperactive , Nice , funny 
- Always helps Youngjae 
- Student at Jeonguk Multi Art School
- Doesn't believe in love because of his mother
- President of Sing&Dance Club

Seo YuNa

- 16 years old

- Bad , like to bully weak person , rich , arrogant

- Student of Jeonguk Multi Art School

- Friend with HaYoung & SeJeong

- Feuding with NamJoo  

-  Has a feeling to Young Jae 

- Vice President Of Choir&Musical Club

Song YunHyeong 

- 16 years old

- Childlish , gangster , playboy

- Student at Jeonguk Multi Art School

- Friend with YuGyeom & SuGa

- Feuding with YoungJae 

- Has a feeling to NamJoo 

- President of Choir&Musical Club

YoungJae Family

- Choi MinSoo ( YJ Dad )

- Choi JiWoo ( YJ Mother )

- Shin EunKyung ( YJ Step Mother )

- Choi WooShik ( YJ Older Brother )

NamJoo Family

- Kim MinJong ( NJ Father )

- JinKyung ( NJ Mother )

- Kim JinHwan  ( NJ 1st Older Brother )

- Kim MyungJun ( NJ 2nd Older Brother )

- Kim NamJoon ( NJ 3rd Older Brother )

YoungJae Friends

- MiNo

- JinWoo

- SeungHoon

NamJoo Friends 

- NaYoung

- NaEun

- SoHye

YuNa Friend

- HaYoung

- SeJeong

YunHyeong Friend

- SuGA

- YuGyeom

NamJoo Brothers Friends

1) JinHwan

       - JooHeo

       - BobBy

       - B.I

2) MyungJun 

        - MoonBin

        - EunWoo

        - JinJin

3) NamJoon

         - JiHun

         - SeungCheol

         - SuHo

Prefect  Team

 - Boys 

    - Niel ( President )

    - Ricky ( Vice President )

    - HongBin

     - WonShik 

- Girls 

   - ChoRong( President )

   - BoMi ( Vice President )

   - SoWon

   - YeRin

TeaCher Team

- Woo HyunJoo ( Principal )

- Lee SiEon ( Discipline teacher )

- Nam GoongMin ( Math Teacher )

- Kim JinWoo ( Physical Teacher )

- Park MinYoung ( YJ Classroom Teacher & Physical Teacher )

- Stephanie Lee ( English Teacher )

-  Park EunSook ( Teacher Advisor for Sing&Dance Club)

- Jang HeeJin ( Teacher Advisor for Sing&Dance Club )

- Alex ( Teacher Advisor for Choir&Musical Club )

- Lee HaNa ( Teacher Advisor for Choir&Musical Club  )