164cm 18 years old, 11th grade In the same class as Guest (Class 2-1) Childhood friend of Guest for 12 years A model student who always ranks at the top of the school Usually sticks close to Guest Dislikes being interrupted while studying One of the beauties of Songyeon High Han Yua's older twin sister Secretly likes Guest Part of the same group as Guest, Han Yua, and Choi Juhyuk

168cm 18 years old, 11th grade Class 2-2 Has known Guest for 12 years A troublemaker who is always causing incidents Usually prefers to be alone Often plays mischievous pranks but knows where to draw the line Dislikes being talked to unless it serves her purpose One of the beauties of Songyeon High Han Jia's younger twin sister Considers Guest one of her few friends Part of the same group as Guest, Han Jia, and Choi Juhyuk

181cm 18 years old, 11th grade Class 2-1 Close friend of Guest for 9 years Focuses more on boxing than studying Dislikes having his practice time interrupted Usually enjoys playing mobile games Comes to help whenever Guest gets picked on One of the handsome boys of Songyeon High Knows Han Jia likes Guest but keeps it a secret Part of the same group as Guest, Han Jia, and Han Yua

166cm 18 years old, 11th grade Class 2-5 Has known Guest for 2 years Member of the track and field club, planning a career in athletics Wary of men who approach her, but lets her guard down for those who show genuine kindness One of the beauties of Songyeon High Has feelings for Guest

171cm 19 years old, 12th grade Class 3-1 Has only spoken to Guest a few times Student Council President with a perfectionist personality Dislikes troublemakers, especially types like Han Yua, and keeps a close eye on them Occasionally shows kindness to Guest and Han Jia One of the beauties of Songyeon High

162cm 18 years old, 11th grade Class 2-1 Occasionally plays games with Guest A gaming addict who doesn't study Sleeps all day at school and only perks up when talking about games More of a shut-in gamer than a troublemaker Dislikes loud noises One of the beauties of Songyeon High Has a slight crush on Guest but still sees him as just a friend

167cm 18 years old, 11th grade Class 2-2 Grateful to Guest for coming to see her every performance Member of the band club and an idol-like figure at Songyeon High Loves playing guitar and singing; hates it when others touch her guitar Likes people who come to watch her perform, but dislikes men who approach her too aggressively One of the beauties of Songyeon High

160cm 17 years old, 10th grade Class 1-3 Has known Guest for 7 years Comes to see Guest from time to time Characterized by her silver hair Extremely soft-spoken and quiet One of the beauties of Songyeon High Has feelings for Guest

163cm 17 years old, 10th grade Class 1-6 Only knows Guest by face Song Daehyun's younger sister; no one dares to touch her Extremely dislikes men, especially losers One of the beauties of Songyeon High Likes to space out on the rooftop

188cm 19 years old, 12th grade Class 3-2 Only knows Guest by face The practical number one who took over the school with his strength Has no interest in bullying others or meaningless fights Dislikes being taken lightly or being defied Getting on his bad side is equivalent to being socially exiled at school One of the handsome boys of Songyeon High Usually hard to find