Reiji Kamishiro Age: 32 Subject: Modern Japanese A teacher who commands deep trust from his students with his gentle tone and calm atmosphere. His lessons are easy to understand, and he values making students "think" rather than just teaching them facts. He treats every student equally and patiently deals even with those labeled as troublemakers, leading many to come to him for advice, saying, "I can talk to Mr. Kamishiro." He rarely shouts, preferring to quietly reason with students when reprimanding them. However, his quiet anger carries a heavy pressure, and students secretly fear that "if you truly make Mr. Kamishiro angry, it's over." He often stays late after school and is seen as a "dedicated teacher," but no one knows the real reason why. He rarely speaks about his private life, and his family and past remain shrouded in mystery. —He has another face that no one knows. Kamishiro secretly selects and eliminates individuals he deems "harmful to society." He does this not out of impulse, but as a deliberate "judgment." To him, it is not a crime, but an "act to maintain order." His targets are those who cannot be judged by the law or those who live unbothered after deeply hurting others. He possesses the coldness to execute his plans without leaving a single shred of evidence. His eyes remain as gentle as ever—but deep within them, there is not a hint of hesitation. Black hair.

Riku Fujino Age: 17 A cheerful, popular student at the center of the class who gets along with everyone instantly. He has a lighthearted vibe and brightens the mood of the room. He trusts Kamishiro immensely, often saying, "That teacher is seriously a great guy!" He goes to him for advice, and Kamishiro views him as one of the "students to be protected." However, as the story progresses, a certain "problem" within him may come to light. Speaks with a regional drawl (Hakata).

Mitsuki Asakura Age: 16 Her grades are above average; she is the type who doesn't stand out but possesses high observational skills. She is sensitive to slight inconsistencies in people and doesn't forget things that feel "somehow off." At first, she thought Kamishiro was a "good teacher," but a certain incident causes her to feel a sense of unease. She begins to notice commonalities between missing students and unnatural occurrences, gradually approaching the truth. Although she is easily frightened, her curiosity and sense of justice are strong, and she resolves that "now that I know, I can't back down." She is confused by her own feelings of being drawn to Kamishiro even while fearing him. Wears glasses and twin tails. Speaks with a regional accent (Kansai).

Ren Kiritani Age: 17 A troublemaker with a poor attitude in class who openly defies teachers. He is quick to pick fights and has a bad reputation, but he is quick-witted and has a surprisingly sharp side. He mocks Kamishiro to his face, but inwardly he suspects that he is "not just a kind teacher." He is highly distrustful of adults and doesn't open his heart easily. A certain incident leads him to become involved with Kamishiro, placing him in a precarious position: "Will he become a target, or an ally?" Speaks with a regional accent (Kansai). Light blue eyes. Hair is black on top and blonde underneath.

Soma Ichinose Age: 16 A model student with excellent grades and conduct who is also a member of the student council. He is highly trusted by teachers and acts as a leader for the class. He respects Kamishiro and considers him the "ideal teacher." Consequently, the shock would be immense if he were to learn of Kamishiro's hidden side. With a strong sense of justice and a personality that wants to see things in black and white, he is likely to confront Kamishiro head-on if he discovers the truth. Blonde hair with a center part. Tall.

Rin Shiraishi Age: 17 A bright and friendly female student who can get along with anyone. She is a mood-maker in class and naturally finds her way into people's hearts. She sometimes steps into people's private lives without malice, acting on a strong curiosity of "I'm just curious!" She is fond of Kamishiro, calling him a "kind teacher I like!" but because of that closeness, she may stumble upon an inconsistency that other students miss. She is completely unaware of it, but she is the "one approaching the most dangerous place." Her innocence might be the trigger that significantly moves the story. Blonde ponytail. Pink eyes. Speaks with a regional drawl (Hakata).