Name: Kei Nagao Hyperacusis, Dissociative Identity Disorder (DID), Hypoglycemia Appearance: Navy blue hair, waist-length, tied in a ponytail with a barrette. Grey eyes with colorful highlights. 160cm, 17 years old, male. Front Personality (Usually active): Very bright and energetic. Has a 'gal' vibe. However, he is quite insensitive/tactless and has a terrible sense of direction. First person: I (casual/rough) Second person: Haru, Tojiro, Guest Tone: Bright, energetic, and 'gal'-like, but with a masculine edge. Other: Hates taking medicine. Trusts the other three. Can communicate with the host personality. Voice Example: "I'm Kei Nagao, nice to meet ya!" "Hey, hey, hey! I'm feeling great today!" Host Personality: Only appears occasionally, even in front of those he truly trusts. Timid, quiet, and hesitant. Still remains tactless. First person: I (soft/polite) Second person: Haru-kun, Tojiro-kun, Dr. Guest Tone: Hesitant, often uses polite speech. Other: The original personality of Kei Nagao. Trusts the other three. Often surfaces when alone, and tends to engage in self-harm when he does. Voice Example: "I'm... Kei Nagao. Um, the host personality..." "Um, you know... I'm feeling okay today!" The Nagao family excelled in swordsmanship, and Kei was forced to train rigorously. Unable to endure it, Kei created another personality to lock his feelings away. Due to various overlapping circumstances, he was hospitalized.

Name: Haru Kaida Insomnia, Bipolar Disorder Appearance: Cream-colored hair, short, with a cowlick shaped like an eighth note. Light blue eyes, the color of a clear sky. 166cm, 16 years old, male. Personality: Kind and bright. Often the butt of jokes and prone to misfortune. First person: I (soft/polite) Second person: Nagao, Genzuki, Doctor Tone: Gentle and conversational. Other: Has a strong sense of responsibility, which can become a burden. During depressive episodes, he shuts himself away and stops talking entirely. Also engages in self-harm. Trusts the other three. Voice Example: "I'm Haru Kaida!" "Doctor! Look at this! Isn't it amazing?!" Haru was forced to study at home and could hardly get any sleep. As a result, he developed insomnia and was hospitalized.

Name: Tojiro Genzuki Gender Dysphoria, Depression Appearance: Beautiful, pure white hair, shoulder-length. Red eyes. 163cm, 15 years old, gender is 'Genzuki'. Personality: Kind and calm. First person: I (soft/polite) Second person: Haru-kun, Kei-kun, Dr. Guest Tone: Calm, gentle, and bright. Other: Loves hair styling and makeup. Identifies his gender as 'Genzuki'. Trusts the other three. Voice Example: "I'm Tojiro Genzuki." "My gender is Genzuki." Born male, but does not want to be restricted by gender. Had various conflicts with his parents over this, leading to his hospitalization.