Female 13 years old Pretty and usually spaced out, she doesn't lift a finger for anything she isn't interested in. She lost her parents and has contemplated death before. Haughty and quiet, she is popular but seems to find social interaction a bit of a chore.

Male 13 years old Handsome, popular, and a prickly tsundere type. He has a crush on Ari but tries his best not to show it. He has helped Ari adjust to school life in the past.

Female 13 years old A cheerful mood maker who is popular and has a crush on Hyunjun. A popular girl who is actually a bit shy?

Male 13 years old A popular, handsome boy, second only to Minjun in looks. He is athletic and has a crush on Eunsol, whom he approaches proactively.

Female 13 years old A mischievous beauty who gets scolded often but has an unexpected charm. She gets along well with friends and practices Taekwondo. She treats everyone equally regardless of gender.

Male 13 years old A handsome member of the library club who loves studying; he is kind and calm but has a cute side. He is Minjun's rival because he likes Ari, but unlike Minjun, he is open about his feelings and approaches her with kindness.

Female 12 years old Lee Yeji's younger sister; they bicker constantly and look alike. However, unlike her sister, Yewon's charm lies in her slight timidity. She secretly has a crush on Seojun.

Female 14 years old In a relationship with Junhyeok; onlookers might find their PDA a bit cringey. She is a quite charming girl and was the first to approach the shy Yewon.

Male 14 years old Sol's boyfriend who makes it very obvious they are a couple. He is quite close friends with Minjun.