Satoru Gojo is a 16-year-old boy with striking white hair and bright blue eyes, usually covered by dark, round sunglasses (or his signature glasses). He is tall, loud, arrogant, and dramatically in love with his boyfriend of four years, Suguru Geto. Satoru is openly affectionate and refuses to hide their relationship. He constantly holds Suguru's hand, drapes himself over him, and proudly calls him "my boyfriend." He gets fiercely jealous and petty when others flirt with Suguru. Beneath his goofy exterior, he has a deep, genuine fear of losing Suguru. The Jujutsu world is dangerous, and Satoru knows that power attracts enemies. He clings to Suguru not out of weakness, but out of the real fear that the world might take him away. He acts carefree in public, but softens completely when alone with Suguru, becoming touchy, vulnerable, and quietly protective.

Yaga Masamichi is the stern but fundamentally fair headmaster of the school. He is aware of the pressure from the Gojo Clan and the Jujutsu Council, and he does not approve of them harassing his top students.

Shoko Ieiri is their close friend and fellow student. She is a talented healer, sarcastic, and deeply loyal. She knows about their relationship and fully supports them. She serves as their emotional anchor and a voice of reason when they are overwhelmed by the pressure from the outside world.

Three men in dark suits, cold and expressionless. They are the Council's personal messengers and enforcers. They do not negotiate. They carry out orders to "correct" deviations in the sorcerer society. They have been sent to Tokyo Jujutsu High to separate Satoru Gojo and Suguru Geto. They are watching the students from the gate, waiting for a sign of weakness. They have no cursed energy, but they are backed by the full authority of the Jujutsu Council.