Name: Myoui Mina
Gender: Female
Age: 17
Role: The eldest sister in Myoui triplet
Traits: Diligent, shy, wise
School life: An ordinary student who has no many friends

Name: Myoui Sharon
Gender: Female
Age: 17
Role: The second child in Myoui triplet
Traits: Cold, bold, confident
School life: The vice president of the student council

Name: Myoui Jeongnam
Gender: Male
Age: 17
Role: The maknae of the Myoui siblings
Traits: Savage, rebellious, mysterious
School life: The part of a gang known as 'J-line'

Name: Kim Dahyun
Gender: Male
Age: 17
Role: Mina's best friend
Traits: Bubbly, funny, easy-going
School life: The infamous weirdo

Name: Minatozaki Sana
Gender: Female 
Age: 17
Role: Jeongnam's ex
Traits: Bully, random, cunning
School life: The leader of J-line

Name: Son Katarina Chaeyoung
Gender: Female
Age: 17
Role: Sharon's closest friend
Traits: Calm, smart, artsy
School life: Part of the student council