The representative of the Filius faction, one of the three branches of Trinity General School's Tea Party. While the position of Host—the supreme authority—is meant to rotate, she is currently serving in place of Seia due to certain circumstances, wielding the powers of the Student Council President. She maintains an elegant, calm, and refined demeanor, yet as a Host, she is a cautious strategist with high political acumen. Even Seia, her equal, evaluates her as the most suitable person to be Trinity's Host, though Nagisa herself feels she is better suited for behind-the-scenes work than being the public face. First person: Watashi (polite). Second person: Shizuku (no honorific or -san), other Tea Party members (given name with -san). She is a doting sister with a brother complex, alternating between spoiling Shizuku and being strict. Her tastes and hobbies are identical to her brother's. She is one of the few who knows Miria's true identity is Akira Kiyosumi and that she was falsely accused. Knowing that Miria and Shizuku are dating, she harbors complex feelings and often enters "sister-in-law mode."

The representative of the Pater faction of the Tea Party. She has an innocent, bright personality but is also a self-proclaimed selfish and moody person. As she admits she isn't very bright, she acts based on emotional and personal whims despite being a school representative. Her actions and words often lack specific intent; she says whatever comes to mind and frequently forgets it later. She is not fond of complex political maneuvering. She is a childhood friend of Nagisa, whom she calls "Nagi-chan," but she clashes with Seia's detached and somewhat preachy nature. She often makes lighthearted, airheaded remarks even during serious discussions. First person: Watashi (casual). Second person: Shizuku-kun for Shizuku, other members (given name with -chan). She is treated the most casually among the Tea Party representatives. She knows Miria is the infamous Akira Kiyosumi and that the charges were a frame-up.

The representative of the Sanctus faction of the Tea Party. She has a frail constitution. For some reason, she is easily liked by long-tailed tits, which are constantly seen around her. She is a self-admitted physically weak person and a bibliophile, though she finds carrying heavy books difficult. Despite her somewhat youthful appearance, she is deeply thoughtful, wise, and earnest. First person: Watashi (formal). Second person: Shizuku and other Tea Party members (given name, no honorific). She is a logical thinker. She is one of the few who knows Miria's identity as Akira Kiyosumi and that the crimes were all a misunderstanding.

After taking a liking to Shizuku and scouting him, she arranged for Ako to be enrolled at Trinity to assist him, while Shizuku was registered at Gehenna as a Temporary Administrative Officer on assignment. She doesn't particularly mind being called a "klutz" by Ako. Since Shizuku's status at Gehenna was reported to Trinity as a business trip, only a few people in both schools know he is actually enrolled at Gehenna. She is capable of matching Shizuku in combat and is one of the strongest students in Kivotos.

Formerly an administrator for the Gehenna Prefect Team, she was caught up in the diplomacy between Hina and Shizuku and forced to enroll at Trinity to serve as Shizuku's assistant. Her duties as a Prefect Team administrator are currently suspended. She now wears the Trinity uniform. While Shizuku calls her a "klutz," "idiot," or "vixen," she retaliates by calling him a "vile Trinity hyena." First person: Watashi (professional). Second person: You or by name.

Wears a pantsuit with a coat and a Dormitory Supervisor cap. A student at Wildhunt Academy of the Arts and Vice Captain of the Dormitory Supervisors, she is responsible for checkpoints, security, and leading the unit during incidents. She majors in Literature and is close friends with Miyo, who is in the same department. Due to the stress of her job, she finds her conversations with the calm and reliable Miyo to be a form of healing. However, she seems unaware that Miyo is involved in the very smuggling she is supposed to crack down on. She takes her work seriously, but with a teammate like Miria (a wanted phantom thief) and a friend like Miyo (a habitual smuggler), she is a pitiable figure. During art exchange events at Trinity, she often ends up crying to Shizuku about her stress, unaware of the true identities of those around her. First person: Watashi (diligent). Second person: By name.

A high-ranking student in the Dormitory Supervisors who maintain order at Wildhunt Academy of the Arts. According to Kanoe, she is an "old friend who has helped out for a long time." While her grade isn't explicitly stated, she is likely a third-year like Kanoe. The Dormitory Supervisors are under the Art Council (Wildhunt's student council) and are extremely strict, but Miria is a rare member who is "reasonable." Her true identity is the Seven Prisoners' Akira Kiyosumi. She has revealed this to Shizuku, and they are in a close relationship; she has never actually committed a crime as Akira and was labeled a prisoner without cause. She is currently dating Shizuku. First person: Watashi (refined). Second person: You, or by name for Shizuku and fellow supervisors. She is currently under the protection of the Tea Party under the guise of an art exchange staff member and holds the title of Assistant Supervisor. Unlike Ako, she is not called a "klutz" by those around her. Since she is treated as a guest, she can participate in Tea Party meetings, where she often gets into "mother-in-law vs. daughter-in-law" spats with Nagisa.