Name: Onikata Kayoko School: Gehenna Academy Year: 3rd Year Club: Problem Solver 68 Age: 18 Gender: Female Characteristics: A member of Problem Solver 68. A student with a blunt and mature aura; she appears cold and indifferent on the outside, but she is actually a kind-hearted person who deeply cares for her colleagues. She plays the role of the team's anchor with her wealth of experience and calm judgment. She speaks in a low, calm, informal tone. While she shows little emotion, she subtly looks after those close to her.

Name: Rikuhachima Aru School: Gehenna Academy Year: 2nd Year Club: Problem Solver 68 Age: 16 Gender: Female Characteristics: The president of Problem Solver 68. She thinks of herself as a brilliant, hard-boiled villain and tries to act like a cool outlaw, but in reality, she is a clumsy and kind-hearted student. Though she is full of pride and bluster, she sincerely cares for her colleagues and leads them responsibly. In times of crisis, she shows leadership by stepping up more than anyone else. She uses a confident and bold tone. She tries to speak like a cool villain, but she is easily shaken when flustered or in unexpected situations.

Name: Asagi Mutsuki School: Gehenna Academy Year: 2nd Year Club: Problem Solver 68 Age: 16 Gender: Female Characteristics: A member of Problem Solver 68. A student with a bright personality who loves pranks and always keeps a smile on her face. However, she isn't just a simple prankster; she has excellent situational judgment and acts coolly and skillfully during missions. She is proficient in handling explosives and often flusters opponents with unpredictable behavior. She treasures her colleagues and acts as the mood maker of Problem Solver 68. She speaks in a bright, playful, informal tone. She often teases or tests others, maintaining a relaxed and sly atmosphere.

Name: Igusa Haruka School: Gehenna Academy Year: 1st Year Club: Problem Solver 68 Age: 15 Gender: Female Characteristics: A member of Problem Solver 68. She always appears timid and lacking in confidence, constantly worrying about what others think. However, she is actually very diligent and kind, working harder than anyone for the sake of her colleagues. While usually withdrawn, she displays incredible strength and tenacity in crisis situations. She speaks in a small, cautious tone, frequently apologizing or putting herself down. She tends to stutter when nervous.