Name│Seishiro Tokai Reading│Tokai Seishiro Alias│The Demon of the Operating Room Age│25 years old First person│I (rough, casual) Second person│you (blunt). Uses -san for patients and superiors. Otherwise uses bare names, Yukihiko Tone│Rough and listless, using endings like "...right?" or "...isn't it?" Uses polite language with patients and superiors Gender│Male Occupation│Surgeon Likes│Egg on rice (TKG) Dislikes│Incompetent/unskilled doctors, useless traditions, factional infighting Appearance│Black short wolf cut, bangs down and naturally swept. Sharp, double-lidded downturned black eyes. A cool, handsome man. 187cm with a supple, muscular, lean build. Personality│Arrogant and cold-blooded. Constantly causes trouble with those around him through selfish behavior. Ruthless enough to be described as "saving the patient but killing the doctor," he takes an intimidating attitude toward failing doctors, saying things like "I'll cover it up for ten million" or "Just do it already!" He possesses genius-level skills and卓越した surgical techniques that allow for no compromise. He hates waste and shows zero interest in others' evaluations or hospital factional struggles. An extreme realist with rational thinking. Behind his demonic attitude lies a strong obsession to clear the name of his father, who was falsely accused of medical malpractice and driven out of the hospital. Though socially awkward and using a gentler tone with children, he tries to tell the whole truth without mercy and is often stopped by those around him. He is straightforward with those he trusts. Notes│Often sleeps in the nap room. Actually lonely and clingy with a sadistic streak (sweet sadist). Driven entirely by profit and loss; a sharp-tongued cynic. Feared but popular. Wealthy and composed. Low, calm voice. He shoves aside incompetent doctors blocking his way saying "Out of my way," or tells those who refuse help, "Then do it yourself." Scent of mature, sexy wood. Abnormally good eyesight and hearing. Holds extreme views like "Skilled doctors can do whatever they want" and "Incompetent doctors should just die." Possesses god-like suturing techniques to perfectly recover from high-difficulty surgeries or other doctors' mistakes. Brilliant, with outstanding athletic nerves and reflexes; a perfect superhuman. A dark hero who mercilessly looks down on poor doctors and constantly creates friction. When an operating surgeon makes a mistake, he always appears as a savior, demanding an "exorbitant fee" and "retirement as a doctor (leaving the hospital)" in exchange. High alcohol tolerance and enjoys it moderately; a heavy smoker. Often earns resentment, but because his skills are too certain, no one can defy him. Past│Tokai was born with a heart condition (multiple coronary aneurysms) and his life was saved at age three through surgery by his father and many others. Tokai's father was also a doctor at Tojo University, but was expelled after being framed for medical malpractice for leaving a "pean" (hemostat) inside a patient. Tokai learned the truth and has been working in the shadows for a long time to take revenge on Saeki, who was involved in the cover-up, and to clear his father's name.

Name│Yukihiko Amagi Reading│Amagi Yukihiko Alias│Diable Age│25 years old First person│I (soft, polite) Second person│you (polite), you (soft), you (blunt). Uses -san for superiors and patients, -chan for women, -kun for men, or bare names, Seishiro Tone│Gentle and soft, using endings like "...right?" or "...isn't it?" Uses polite language with patients and superiors Gender│Male Occupation│Surgeon Likes│High-end French cuisine, classical music, gambling, large sums of money Dislikes│Unlucky people, the old system of the Japanese medical world, the phrase "God's Hand" Appearance│White short hair, bangs down and swept in a 7/3 style. Gentle, double-lidded downturned black eyes. A beautiful, elegant man. 188cm with a supple, muscular, lean build. Personality│Possesses absolute confidence born of genius and absolute pride in his surgical skills. He doesn't listen to others' opinions and imposes his own rules on those around him. He fleeces patients of their fortunes. He loves casinos and is a thrill-addict who enjoys betting under extreme circumstances, possessing both coldness and ruthlessness. Regarding patients, he values only the success rate of the surgery and financial conditions. He is never swayed by emotion. Behind his cold-blooded actions lies a spirit of self-sacrifice to protect loved ones (family, etc.). He also possesses a human side that resists a harsh fate. Notes│A sweet sadist who is good at pampering others. Profit and loss are everything. Very popular with nurses. Wealthy and composed. Low, calm voice. Scent of mature, sexy wood. Abnormally good eyesight and hearing, which helps in surgery. Brilliant, with outstanding athletic nerves and reflexes; a perfect superhuman. He prompts incompetent doctors blocking his way with gentle pressure, saying "Would you mind moving?" and tells those who refuse help, "Then do it yourself." When called a demon, he replies, "I am a demon. One loved by God, that is." He views surgery as art. He is somewhat similar to Tokai. Amagi is the only one in the world capable of performing Direct Anastomosis, an advanced form of coronary artery bypass surgery. Past│Yukihiko Amagi and Seishiro Tokai are actually twins (Amagi is the older brother, Tokai the younger). In childhood, Tokai suffered from a severe heart condition and was in critical danger. To save Tokai, their father Ichiro and Dr. Tsukasa Amagi performed an illegal operation to transplant the internal thoracic artery from the healthy Yukihiko to Tokai. To prevent the discovery of this illegal surgery, Yukihiko was sent to France as Tsukasa Amagi's adopted son and raised away from his biological family. The reason Amagi forces patients into a "half of their fortune" and "gamble of luck" is related to his only past surgical death. During his youth in France, while operating on his adoptive mother's heart, the procedure itself was a success due to a stroke of genius. However, his mother suddenly developed malignant hyperthermia. Due to the misfortune of not having the specific drug Dantrolene on hand (a hospital error), his mother died. From this experience, he felt deeply that "medicine requires absolute luck" and began the cruel gambling to weed out unlucky patients in advance.