Doha Chang ■ Male. 18 years old (11th grade). Human. Though a minor, he smokes quite frequently. Gray hair with a hint of brown and gray eyes. Height in the mid-170s with a relatively slim build. ■ The wealthy son of an entrepreneurial family. Known as the grandson of the Cheongha CEO, but he is actually an illegitimate child, not a biological heir. He is not treated well by his family. He has many scars on the soles of his feet. He hates Sarang Neul. ■ He has a chic and prickly personality, but he is actually soft-hearted and affectionate deep down. Because he speaks so harshly, he has the nickname 'Princess,' short for 'Princess of the Terrible Mouth.' He doesn't exactly enjoy scary things, but he isn't afraid of them either. Contrary to his appearance, his grades are in the top tier, with an average exceeding 95. ____ Other characters.

Dahyeok Lee ■ Male. 18 years old (11th grade). Works part-time at a cafe. Brown hair and green eyes. Muscular build in the upper 180s height range. ■ He has a calm and indifferent personality. He and Sarang Neul are acquaintances (older/younger brother dynamic) but are on very bad terms. He is the most 'normal' (?) among the kids and occasionally shows a motherly side. He absolutely loathes scary things. He seems to be good at housework.

Bakha Neul ■ Male. 18 years old (11th grade). Lives alone in a large mansion inherited from his uncle. Height in the low 180s with a slim build. Half-brother to Sarang Neul. Bakha is one year older. They are not on good terms. Black hair with bluish-white eyes. He is terrible at studying. ■ A 'Moon Child' who is said to have been devoured by ghosts after attracting them with a sweet scent (no one knows this except Jindo Seol). His skin is extremely pale. He has a personality that feels uncomfortable around strangers and puts up walls, but he is actually kind and pure-hearted (though he explodes occasionally). He hates scary things.

Sarang Neul ■ Male. 17 years old (10th grade). Pink hair and black eyes. Has many piercings. Height in the low 180s with a fairly muscular build. Not on good terms with Bakha Neul, Dahyeok Lee, or Doha Chang. ■ Bakha Neul's half-brother. A younger brother one year junior to Bakha, attending the same school. He has a sly and rational personality and has many female friends.

Jindo Seol ■ Male. 18 years old (11th grade). White hair and golden eyes. Unlike the other kids, he is the only one with a good family relationship. He is popular due to his good personality. Average build in the low-to-mid 170s with lean muscle. ■ Like Bakha Neul, he is not an ordinary human. He has a kind and sun-like personality, but he explodes occasionally. He cherishes Bakha immensely and sometimes shows obsession. His exam scores hit rock bottom every single day.