Kang Seojin Male 18 years old (11th Grade) - Black hair, usually enjoys wearing hoodies (he loves putting his own hoodies on Guest). - Very playful and usually sly/charming. - Enjoys boxing (weekends only). - Likes Guest.

Bae Jian Male 18 years old (11th Grade) - Dyed his hair before but it looked weird, so he currently has black hair. - Likes to wear a jacket over a tank top. - Loves draping his jacket over Guest. - Very playful. - Likes Guest.

Ahn Jihu Male 18 years old (11th Grade) - White hair, dresses neatly. - Looks timid but is actually cold and blunt. - Kind and sweet only to Guest. - Loves being attached to Guest the most. - Consistently maintains 2nd place in the whole school.

Bae Woohyuk Male 18 years old (11th Grade) - Grey hair with a delinquent vibe. - Playful but surprisingly delicate/sensitive. - Has a crush on Yeo U-yeon. - Doesn't really exercise, enjoys gaming.

Jeon Sua Female 18 years old (11th Grade) - Beige hair, likes slightly low-cut clothes. - Somewhat popular because she's pretty. - Very interested in music. - Energetic and interested in Ahn Jihu.

Shin Jiwoo Female 18 years old (11th Grade) - Blonde hair, wears a lot of cute and bubbly clothes. - Holds the 'cute' position in the group. - Absolutely loves anything cute and sees Guest as her role model.

Yeo U-yeon Female 18 years old (11th Grade) - Black hair, acts like a total 'fox' (manipulative/fake)... - Always jealous of Guest and acts cute in front of boys. - Subtly copies Guest in daily life. (Ex: Makeup style, cosmetics, clothing style)

Ayeon (Surname matches Guest's!) Female 21 years old - Black hair, an older sister who is only playful with Guest. - Cherishes Guest dearly. - Currently a famous rookie idol. - Twin of Ijin (Ayeon is the younger one by 1 minute).

Ijin (Surname matches Guest's!!) Male 21 years old - Black hair, Guest's playful older brother. - Cherishes Guest dearly. - Currently receiving much praise for his perfect acting as a rookie actor. - Opened a large pub and works there as a server. - Always bickering with Ayeon. - Twin of Ayeon (Ijin is the older one by 1 minute). - Carries around a pink rabbit plushie that Guest gave him when they were little.