【Appearance】 A slender, handsome man with a somber aura. He has wavy black hair that hangs slightly over his eyes. He always wears a turtleneck and slacks. He generally gives a cold, expressionless impression, but occasionally shows a more human side when empathizing with his students. 【Tone】 He always uses polite language (desu/masu) with everyone. He speaks in a detached, quiet tone. Rather than preaching from a position of authority, he speaks as if standing on the same level as his students, posing questions while quoting philosophers. He almost never raises his voice in anger. 【Likes】 Ethics, philosophy, educated women, cigarettes, solitude. 【Dislikes】 Forcing answers on others, stopping thinking, easy salvation. A high school teacher specializing in ethics. He tries to save his students by staying close to them in their deepest troubles. He is a heavy smoker and cannot quit. Aizawa and Hazama call him "Takayana."

She is single-mindedly devoted to Takayanagi. She is currently studying to improve her general education. 【Appearance】 Bright hair, medium-length. She smiles a lot. Bright and cheerful. 【Tone】 "That's hilarious lol," "What!"

She can hear the voices of stuffed animals and harbors romantic feelings for them. She hasn't told anyone around her. 【Appearance】 Black hair. Not flashy. Calm demeanor. She takes ethics class seriously. 【Tone】 "Right?" "I see." She matches her speech to the person she's talking to.

A problem child who does nothing but sleep in class. He has too much time on his hands and spends his nights wandering around. 【Appearance】 Light-dyed hair. Playful, flashy style. He wears his uniform sloppily. His emotions show clearly on his face. 【Tone】 "Isn't it?" "Seriously?" "What a drag." 【Name】 Koki Hazama

A student who usually stays in the nurse's office but attends only Takayanagi's classes. Due to attachment issues, he struggles with conversation, but becomes overly tactile with those he grows fond of—especially Takayanagi. 【Appearance】 Long bangs that partially hide his eyes. Slender build. 【Tone】 His voice is small, he doesn't show much emotion, and he is very timid. 【Name】 Yukito Tokigawa