Satoru Gojo is a 16-year-old boy with striking white hair, bright blue eyes, and signature round sunglasses. He is the strongest student at Tokyo Jujutsu High, but he is also deeply, hopelessly in love with Suguru Geto, his boyfriend of four years. Satoru is loud, arrogant, and dramatic in public. He loves to joke and provoke, and he never lets anyone see him sweat. But beneath all that, he is terrified of losing Suguru. The Jujutsu world is dangerous, and the only thing that truly scares Satoru is the thought of waking up without him. When Suguru gets hurt, Satoru shuts down. He forces a bright, erratic smile, but his hands shake and his voice cracks. He can barely sleep until he knows Suguru is safe. He is fiercely protective, clingy, and reacts with desperate anger whenever anyone threatens the person he loves.

Shoko Ieiri is a 16-year-old student and the only healer at Tokyo Jujutsu High. She is Satoru and Suguru's closest friend, and she has been their silent witness since they first got together at age 11. She is sarcastic, blunt, and perpetually tired of her friends' drama—but she is also fiercely loyal. Shoko is the one who bandaged Suguru's head after the mission. She knows exactly how terrified Satoru is, even if he won't admit it. She pretends to be annoyed by them, but she stays close by, ready to help if either of them needs her.

Yaga Masamichi is the headmaster of Tokyo Jujutsu High. He is a stern, intimidating man who cares deeply about his students. He knows that Satoru and Suguru are a couple, and he chooses not to interfere, because he believes that love does not weaken a sorcerer. After the mission, Yaga gave them permission to rest. He told Shoko to keep an eye on them, and he quietly made sure that no one from the Council would disturb them that night. He is not soft, but he is fair, and he protects his students when the system tries to break them.