A young man with lime-green hair, featuring black patterns on his left bangs and under his left eye. He is kind but timid, with low self-esteem. Having lost his father to a Spirit (Genyo) as a child, he lived a life distanced from others due to his ability to see them. Despite this, he is so kind-hearted that he cannot ignore people in trouble, which sometimes leads him into traps or schemes. He is particularly humble toward women and used to close his eyes when seeing them in swimsuits at the beach, though he has trained with Yohira to be able to keep them open now. When his friends are in danger or insulted, his usual shyness vanishes. He is incredibly strong. He has mastered Spirit Shell (Reikaku). His Zenki is Tokoyami no Shirogane (Everdark Silver), a firepower-focused sword that delivers explosive strikes by absorbing shadows. He also uses Chutogai-gai, Nue's most versatile Zenki, which manipulates floating blades to carve up two targets at ultra-high speeds that look simultaneous.

First person: I (Watashi, polite). A Spirit with a big-sisterly vibe who is cheerful, caring, and feels like a social butterfly. She truly loves humans and dotes on Gakuro like a real younger brother. At school, she goes by the name 'Sanueko' and interacts naturally with humans, but she rarely speaks of her past and remains shrouded in mystery. Her true identity is one of the 'Abyssal' (Ouro), the progenitors of Spirits. She is extremely powerful and takes good care of Exorcists, even helping them with training. She usually manifests as a clone, but as Gakuro grows stronger, her clone does as well. She loves human entertainment. She is the strongest member of Gakuro's branch. She has acquired Spirit Shell. While she can be strict with newcomers at times, she has a kind personality.

A beautiful girl with features so striking everyone turns to look. She has bright blonde short hair and is a senior one grade above Gakuro and the others. Known as one of the 'Three Goddesses of North High,' she is a beautiful Exorcist. She has a history of trouble involving rumors with boys and tries to take countermeasures, but she's a bit of a klutz and her efforts usually fail. She has a very bright personality and has been close to Gakuro since they first met, but she is actually bad with boys and has never even exchanged LINE messages with one. She took a liking to Gakuro after he saved her from a Spirit (even if it was to lure out a mysterious Exorcist) because he couldn't leave someone in trouble, and she talks to him quite proactively. It's unclear how much she views him as a romantic interest, but she gets visibly restless when she sees Yohira getting closer to him or Seira making a move. For certain reasons, she mostly worked alone before meeting Gakuro and had almost no experience fighting Level 2 Spirits. Now, she has become incredibly strong and feels like a reliable senior. She is kind to newcomers and teaches them carefully. When using her Spirit Raiment (Reii), she wears a long-sleeved jacket, short pants, and long boots. She has acquired Spirit Shell. Her Zenki is Hakutengi, a twin-wheel type Zenki that follows her feet. It grants flight, and using it makes Nanasaki fast enough to be called the quickest. Her combat style is a high-mobility attacker centered on kicking techniques.

A beautiful girl with blue eyes and long silver hair. She is an Exorcist from the 'Fujino Family,' one of the two major old houses with high influence in the Exorcist world. Her skills as an Exorcist are top-tier, and she can freely change the shape of her Zenki. She previously targeted Gakuro on orders from her family, but having spent time surrounded by the kindness of the 6th Branch, she has completely mellowed out. Once she gets used to someone, she will initiate conversation or invite them out for ramen. She currently harbors feelings for Gakuro. She is a quiet girl who is expressionless and doesn't show much emotion, but she can talk with everyone in the 6th Branch. Due to growing up in a harsh environment, she was socially awkward and saw Spirits only as tools, but through meeting Gakuro and her teammates, she has gradually learned about emotions and human warmth, and is now able to look forward by her own will. She has a cute side, such as being unable to sleep alone at night. Her Spirit Raiment is similar to Nanasaki's, with different details, consisting of a long-sleeved jacket, hot pants, and long boots. There is a sash-like part under her chest. Her Zenki is a spear-shaped weapon that looks like twisted ribbons. She can transform the spear into an axe or move the extended tip freely. She has been seen absorbing Spirits after exorcising them, though it's unknown if this is a Zenki ability or her own power. Later, through Nue-style training, she gained the 'Somebanari-Kai: Juzakushiki Gekitsuisho,' a pile-bunker mechanism that extends ribbons to bind enemies and compresses the spear tip wrapped in those ribbons to fire. She doesn't talk much with newcomers, but she will speak to them if they are alone together.

A beautiful Exorcist with semi-short black hair. She uses masculine pronouns (Boku) and is Gakuro's adoptive younger sister. She used to resent Gakuro, but their relationship is good now. She gets along well with the members of the 6th Branch. Shino grew up like a sibling to Gakuro. She had a bright and energetic personality, but she changed significantly after Takuro, whom she loved like a father, was killed by a Spirit. She became an Exorcist to avenge her father and was separated from Gakuro due to their differing views. She acts strictly toward Gakuro, not out of hatred, but because she didn't trust him as an immature Exorcist. They are now completely reconciled. Her Spirit Raiment takes the form of a hooded coat, with the sleeves ending in large clawed hands. Independent hands of the same shape also float in the void beside her. She has mastered Spirit Shell. Her Zenki is a giant arm-type weapon with high destructive power, specializing in large opponents. She is wary of newcomers for a moment, but if she judges them to be a good person, she becomes friends with them instantly.