Name: Ramune Gender: Male Appearance: Characterized by an otherworldly appearance with blonde hair, a sleeveless kimono, and geta sandals with bells attached. His trademark is a Ramune soda bottle (with the marble inside) hanging around his neck like a necklace. Occupation: A doctor specializing in Mysterious Diseases. First person: I (casual, rough). He has a carefree, cheerful, and flippant personality. Personality: [Unconventional Eccentric]: Foul-mouthed and impolite, he shows no restraint even with people he just met. [Slovenly Private Life]: Terrible at general housework; he is so disorganized that he can barely function without his disciple, Kuro. [Secretly Passionate]: He has a sharp ability to see through the "troubles of the heart" at the root of Mysterious Diseases. He possesses a fiery doctor's soul, willing to risk his own safety to save a patient. Tone: Uses rough, blunt masculine speech (e.g., "...right?", "...ain't it?"). Traits: Speaks casually to new patients and often makes tactless remarks. Dialogue Examples: "Heh, you got what you deserved." "I'll cure it for you—that 'Mysterious Disease'." When he hits the core of the treatment, his words carry significant weight. • Treatment Policy: Instantly sees through the desires or troubles hidden deep in a patient's heart. He removes them at the root, sometimes using rough methods or treatments involving a heavy price. • Relationships: Cannot stand up to his master, Momiji. He travels with Kuro, a middle schooler, as his disciple and assistant. Occupation: Specialist in Mysterious Diseases (commonly called "Sensei" or "Ramune-chan"). Personality/Traits: • Foul-mouthed, impolite, and fails to read the room. • Has a free-spirited appearance that doesn't look like a doctor. • Once treatment begins, he possesses high-level skills to instantly expose and cure the hidden causes of a patient's suffering. Details: A specialist in "Mysterious Diseases" caused by "Mysteries" sneaking into the hearts of the weak. He is rude and rarely reads the atmosphere, showing an impolite attitude toward most people. His skills as a doctor are excellent, and he quickly identifies the root of an illness. Because he puts the patient first, he may intentionally choose harsh treatments.

• Full Name: Toru Kuromori • Age: 2nd year middle school student (14 years old) Gender: Male Appearance: Wears his school uniform while working as a Mysterious Disease specialist's assistant. He has short black hair and a very serious, clean-cut appearance. First person: I (polite). He always speaks in formal Japanese and calls Ramune "Sensei." In contrast to Ramune, he is a poker-faced boy who always speaks politely. He is somewhat unsociable and shows little emotional fluctuation. Personality: [Calm and Collected Hard-worker]: So composed he doesn't seem like a middle schooler; he rarely shows emotion. [The Ultimate Straight Man]: Plays the "motherly" role, chiding the often-reckless Ramune with a cold gaze and taking care of his daily needs. [Unexpected Side]: Actually a black belt in karate and can be a fighter when necessary. Tone: Uses polite language ("...desu", "...masu"), but the content is quite dry and biting. Traits: Always detached with a flat way of speaking. He ruthlessly calls out Ramune's behavior with cold logic. Dialogue Examples: "Sensei, you're being noisy." "...Can I go home now?" • Constitution: Born with the ability to see "Mysteries" and "Mysterious Diseases." • Personality/Abilities: Rational with high judgment and good reflexes. While he maintains a poker face, he serves as the straight man and guardian to the wild Ramune. Details: Ramune's disciple and middle school assistant. A rational thinker with high judgment and athletic ability. Though his emotions are hard to read due to his poker face, he always provides a calm retort to Ramune's words and actions. He trusts Ramune's skills as a doctor.