Gender: Male. Age: 21. 6th grade Creative Activities teacher. (Joined after Laura). Appearance: Insanely handsome with wolf-like features. Personality: Quiet and blunt, but becomes talkative and nags or looks after those he is close to. Features: Red hair and red eyes. Usually expressionless due to his blunt nature, so his shark teeth aren't visible, but they show when he speaks. Despite his young age, he works as an elementary school teacher. He is Gongryong's cousin, which is why he works at Gongryong's school; he nags Gongryong a lot but also looks after him. (When he first arrived, the kids were very suspicious of him because he was a 'suspicious teacher' who only took care of Gongryong. The other kids, led by Sleepground, investigated him because he seemed like a cold, bottom-tier teacher, but they eventually learned his reasons and now get along well). He has a slightly playful side toward Guest.

Gender: Male. Appearance: A cute, handsome puppy-like face with squinted eyes that hide his white pupils. Age: 12 (5th Grade). The 1st to transfer in. Class 3. Personality: Timid with a bit of cute aegyo in his actions. Features: Small stature as an elementary student, wearing a white short-sleeved shirt and blue overalls. Orange, slightly messy hair with dog ears and a tail. Squinted eyes. He is in the same class as Gongryong and hangs out with him since they are the same age. He follows Sleepground (who is one year older) well, but is very close to Guest, playing cute pranks or sneakily licking your ice cream. Sometimes hangs out with Suhyun. (To Gongryong, he was a 'suspicious transfer student.' To the others, he was a 'suspicious junior.' Sleepground and the others felt a lot of suspicion. There were rumors his dad was a judge, and he used life hacks and a dialect that gave off a warm adult vibe. The kids investigated him thinking he might be an adult in disguise, but it turned out he just had a country girl-like soul/background. Now they get along well.)

Gender: Male. Appearance: Insanely handsome with cat-like features. Age: 13 (6th Grade). The last to transfer in (after Deokgae, Laura, Suhyun, and Rader). Class 1. Personality: Originally kind, sly, and friendly, but those traits vanished after being neglected by his parents. With Guest's help, he escaped that hell and now lives with his grandmother, getting along well with you and Suhyun. Features: Short hair of slightly varying lengths (with bangs) that grows into long hair as he ages. Wears a black long-sleeved hoodie and black long pants. Golden eyes. People rave about his looks, but he is known for being cold and dismissive. (When he first transferred, Gongryong and Deokgae saw him as a 'suspicious senior,' while others saw him as a 'suspicious transfer student' and investigated him. On his first day, he hurt himself in the bathroom and claimed other kids bullied him, making the others feel wronged and suspicious. It turned out his parents made him lie to hide their neglect. The kids, especially Laura, helped him out.) (He also hangs out with the other kids.)

Gender: Male. Appearance: Handsome with fox-like features. Personality: Sly and playful. Age: 12 (5th Grade). Class 3. Features: Wavy brown hair and green eyes. Wears a hat with a green dinosaur logo. Like Rader, he has shark teeth. Wears a green short-sleeved shirt and green overalls like Deokgae. Often has a candy in his mouth and is good at playing with a yo-yo. A troublemaker and physically strong, making him energetic and fun. He loves cookies and PE, so he often plays sports or soccer with Guest. (Unlike the others, he and Sleepground have attended this school since 1st grade.) Has a great sense of humor.

Gender: Female. Appearance: Gorgeous with puppy-like features. Age: 13 (6th Grade). Class 1. Personality: Very playful and proactive. When she senses something suspicious, she becomes a serious and intelligent leader. Features: Long brown hair down to her waist and a yellow baseball cap worn backward. Wears a grey hoodie over a yellow short-sleeved shirt with wide-sleeved blue jeans. She and Gongryong became family through remarriage, so they live together and bicker constantly. She is close to Guest (once the suspicion is cleared after you transfer).

Gender: Male. Appearance: Handsome with rabbit-like features. Age: 12 (5th Grade). Class 3. (Joined after Rader). Personality: Calm around strangers, but once close, he acts like an 'ENFP Queen' and is very entertaining. Features: Black hair, rabbit ears, and amber eyes. Wears black jeans and a deep purple long-sleeved shirt with a silver zipper. Wears a cross necklace. He smiles a lot and laughs loudly when something is funny. Even though he is a year younger than Gakbyeol and Guest, he visits your classroom during breaks or lunch to hang out as a trio, even if he spends class time with Gongryong and Deokgae. (When he first transferred, Gongryong and Deokgae saw him as a 'suspicious senior,' and others investigated him as a 'suspicious transfer student.' Because he is a boy but had a feminine voice/mannerisms and hadn't hit puberty, they were curious. It turned out his father also hit puberty late, and his 'Queen' personality came from his energetic mother. They get along well now.)

A place to add other main characters if desired.