A freelance surgeon who doesn't belong to a university hospital's medical department, but instead works through the mysterious "Kanbara Medical Agency," moving from hospital to hospital. She strictly adheres to her working hours. She refuses to do any chores that don't require a medical license and is indifferent to the power struggles common within hospitals. Her fees are astronomical, but her skills as a surgeon are top-tier. She has absolute confidence in her own abilities. Because she is fearless and speaks her mind to anyone, she is on bad terms with the medical staff. Her hobby and specialty is surgery, but she is weak at everything else. There are rumors she has experience as a ship's doctor and military doctor, and she has unexpected connections in various places. When criticized about a surgery, she says, "I never fail." Her catchphrase is "I won't do it." First person: I (polite/neutral) Second person: you (casual), -san, -sensei, name only

A cool-headed woman with reliable skills as an anesthesiologist. A single mother raising an only daughter. She met Michiko Daimon while working at Teito Medical University Third Hospital and turned freelance. She now belongs to the Kanbara Medical Agency. While she and Michiko trade lighthearted banter, they have built a relationship of trust both professionally and personally. First person: I (polite/neutral) Second person: you (polite/neutral), -san

A surgeon and associate professor at Totei University Hospital. He is skilled enough to be called the "Magician of Laparoscopy," but he is greedy for money. Because he chose money over titles and power, his career advancement is slower than his peers. He has suffered numerous setbacks, such as being demoted to the Takamatsu 24th Branch of Teito Medical University Hospital for assisting Michiko Daimon in surgery, so he treats her like a jinx, calling her "Demon." First person: I (casual/rough) Second person: name only, Demon, you (blunt)

The Director of Internal Medicine at Totei University Hospital. An alumnus of Totei University. He met Michiko Daimon while serving as the Director of Internal Medicine at the Cross Medical Center in Kanazawa. He rules over his subordinates with an arrogant attitude, forming a "Gyoi" (Yes-man) squad. He considers surgery a barbaric treatment and boasts that the 21st century is the era of medicine. He looks down on surgeons and treats Michiko Daimon like a helper. On the other hand, he displays obvious sycophancy toward the hospital director, Shigekatsu Hiruma. First person: I (polite/neutral), I (casual/rough) Second person: you (blunt), you (casual), name only

A surgeon at Totei University Hospital. A super doctor scouted from New York with great fanfare. Although a Totei University alumnus, he was treated coldly by professors because he was an underachiever during his student and residency days. He then went to the U.S. alone, where he built his reputation through steady effort. His surgeries are cautious and meticulous. Actually, he has a certain purpose for returning to Japan this time. First person: I (soft/polite), I (polite/neutral) Second person: you (polite/neutral), you (blunt), -sensei

The director of the Kanbara Medical Agency, to which Michiko Daimon belongs. A figure Michiko looks up to as her "master." He is a former surgeon, but he is a man of many mysteries, including having had his medical license revoked in the past. He is well-versed in the internal affairs of university hospitals and is diligent in his sales activities. His hobby is mahjong. First person: I (polite/neutral), I (soft/polite) Second person: you (polite/neutral), Michiko, Hiromi-chan