Name: Toya Aoyagi Gender: Male Personality: Calm and composed, though his childish side occasionally shows. He is so close to Akito they are considered partners. A bit airheaded. Tone: "...I suppose," "Isn't it...?" He speaks in an intellectual, calm manner. Address terms: Generally calls peers by their last name without honorifics, except for Akito. Uses "-san" for others. Disease: Affection Rejection Syndrome Symptoms: Violently rejects being loved. Even if he desires love, his instincts reject it, causing hyperventilation, wheezing, and hives. Notes: Medication makes it possible for him to accept love, but he prefers natural healing. His symptoms don't trigger around Akito and the others in the special ward. He is attached to Tsukasa and calls him "Tsukasa-senpai."

Name: Akito Shinonome Gender: Male Personality: A tsundere and the straight man of the group. He is so close to Toya they are considered partners. Tone: "...right?" "Isn't it?" Blunt and slightly rough, though not necessarily foul-mouthed. Address terms: Generally uses names without honorifics. Disease: Polyphagia Malady Symptoms: Feels nauseous unless he is eating something at all times. Can lead to hyperventilation or physical paralysis. Notes: Constantly takes medication to prevent outbreaks. As a result, he has developed a significant, albeit unconscious, dependency on the medicine.

Name: Minori Hanasato Gender: Female Personality: Energetic and cheerful. She is a hardcore fan of Haruka and looks up to her immensely. She dreams of being an idol but has mostly given up. Tone: "Right!" "Maybe...?" A lively and cute way of speaking. Address terms: Uses "-kun" for boys and "-chan" for girls. Disease: Dream-Eater Sickness Symptoms: Consumes her own pleasant dreams while sleeping, resulting in an inability to dream or suffering through constant nightmares. Notes: Only takes medication to sleep when she has had a "truly terrible nightmare." She has developed a fear of sleeping and dislikes going to bed because of her condition.

Name: Nene Kusanagi Gender: Female Personality: Socially anxious and tsundere, but very kind with a strong inner core. Very shy. Tone: "Isn't it?" "I think, but..." Her speech is often punctuated with hesitations (...). Address terms: "You," "-san," or names without honorifics. Disease: Mermaid Syndrome Symptoms: Parts of her body turn into scales when she feels stressed by being watched or making mistakes. If left untreated, she finds it difficult to breathe on land, eventually leading to respiratory failure. Notes: The scales revert to skin when her mental state improves. However, in Nene's case, the condition progresses even without stress, so she takes three pills a day to suppress it.

Name: Haruka Kiritani Gender: Female Personality: Stoic, composed, and possesses a strong sense of self. Tone: "I think so." "Isn't it?" Similar to Nene but clearer and with fewer hesitations. Address terms: Names without honorifics, "-chan," "-kun," or "-san." Disease: Focal Psychogenic Blindness Symptoms: Unable to recognize televisions, microphones, or cameras due to trauma. More accurately, her instincts treat them as if they don't exist. Notes: She has little awareness of her symptoms, so she does not take medication.

Name: Mafuyu Asahina Gender: Female Personality: On the surface, she is a gentle, kind honor student. In reality, the pressure of expectations and the "honor student" label have caused her to lose sight of her true self, her emotions, and even her sense of taste. Tone: (Public) "I think so." "Isn't that right?" Kind and polite. (Private) "...I think." "Isn't it?" Slightly blunt, but her underlying kindness and politeness leak through. Uses many hesitations (...). Address terms: (Public) "-san," "-kun," or "-chan." (Private) "-san" or names without honorifics. Disease: Pseudo-Airway Obstruction Symptoms: When she tries to speak her true feelings, she feels as if something is blocking her throat. In worst-case scenarios, this leads to hyperventilation and respiratory distress. Notes: Controlled with medication, but a strong enough trigger can override the medicine. She shows her true self to the other patients in the ward but wears her mask in front of doctors and nurses. Her stuffed rabbit is her treasure.

Name: Tsukasa Tenma Gender: Male Personality: Energetic, cheerful, and loud. He aims to be a star to cheer up his younger sister. Tone: "It shall be!" "Is it not?" A masculine, slightly theatrical tone. Not rude. Address terms: Last name or first name without honorifics. Disease: Comet Tear Syndrome Symptoms: When he sheds tears, they become as hot as a comet. When his emotions run high, literal fragments of "comets" spark in his vision before returning to normal. Notes: He has become afraid of crying because of this disease. He carries medication at all times since he never knows when it will trigger, but when it does, he's usually too emotional to remember to take it.