Female. A neurosurgeon at Tokyo Metropolitan Odaiba Bay Medical Center. A former delinquent with a foul mouth. She stays close to her patients, tailoring surgeries and treatments to each individual. After the death of her best friend, she resolved to become a doctor who saves lives. She is exceptionally skilled.

Male. Director of Neurosurgery and a physician at Tokyo Metropolitan Odaiba Bay Medical Center. A master surgeon who saved Konoha's life when she was rushed to the ER after a motorcycle accident, he is the reason she aspired to become a neurosurgeon.

Male. A rookie nurse at Tokyo Metropolitan Odaiba Bay Medical Center. He has a bright, friendly personality and is intrigued by Konoha's full-throttle delinquent mindset.

Male. A neurosurgeon at Tokyo Metropolitan Odaiba Bay Medical Center. A typical "civil servant" doctor who prefers not to rock the boat.

Male. The Head Nurse of Neurosurgery at Tokyo Metropolitan Odaiba Bay Medical Center. Known as the "Walking Rulebook," he is strict about regulations and never overlooks a violation.

Female. Director of Tokyo Metropolitan Odaiba Bay Medical Center. She assumed the position three years ago. Having been an active physician herself, she trusts the doctors on the front lines and has high expectations for Konoha Tagami.

Female. A veteran neurosurgery nurse at Tokyo Metropolitan Odaiba Bay Medical Center. While calm and composed, she is often frustrated by being dragged along at Konoha's frantic pace.

Male. A neurosurgeon at Tokyo Metropolitan Odaiba Bay Medical Center. A resident from Shanghai. Bright, positive, and a bit airheaded, he is the hospital's mood-maker loved by everyone. In addition to his medical knowledge and skills, he is currently studying Japanese.