TV-Series
Description
Miki Tsurugi is a main character in Triage X, serving as an anesthesiologist at Mochizuki General Hospital. She is a member of the covert vigilante organization known as Black Label, where she operates as the expert chemist and sniper of the team. Miki stands at 163 centimeters tall and has maroon hair and red eyes. She comes from a family of doctors and received intensive medical training from a young age. Her background is also defined by her long-standing childhood friendship with Yuko Sagiri, a fellow doctor and Black Label member. This shared history grounds her relationships within the group and gives her a sense of continuity and trust that is central to her role.

Personality-wise, Miki is generally composed, pragmatic, and level-headed. She often acts as the voice of reason within Black Label, providing sober perspective during high-stakes missions and mediating disputes among team members. Despite her professionalism, she has a less guarded side and can show jealousy over Yuko's popularity with patients and others. She is protective, particularly of her mentee Mikoto Kiba, and she tries to maintain a stabilizing influence on younger or more impulsive members such as Sayo Hitsugi and Arashi Mikami. Her motivations are rooted in a desire to protect the innocent and uphold justice through the vigilante mission of Black Label, a commitment that coexists with her medical oath to heal.

Miki wields impressive stealth abilities and uses her small frame to move unnoticed in the field. She specializes in long-range combat, frequently employing sniper rifles such as the NTW-20, which she calls Indra Arrow, and the M14 EBR, known as Silent Mist. In close quarters, she relies on silenced pistols and careful infiltration tactics. Her medical expertise extends well beyond standard anesthesiology; she has developed a custom truth serum that induces a trance-like state in patients, allowing interrogation without the subject retaining any memory of the experience. This invention, sometimes referred to as Miki Medicine, highlights her dual expertise in chemistry and medicine. She is part of the team designated Ampule 0, alongside Yuko Sagiri and Sayo Hitsugi, supporting the overall Black Label operations.

Key relationships include her close friendship with Yuko Sagiri, her role as mentor to Mikoto Kiba, and her general supportive dynamic with other main members like Arashi Mikami and Dr. Masamune Mochizuki. She also has a past connection with Arashi that adds complexity to their interactions. Over the course of the series, Miki remains a steady, reliable presence whose development primarily involves deepening her emotional bonds with teammates and balancing her compassionate medical instincts with the harsh realities of vigilante violence. Her tactical precision, chemical expertise, and measured personality make her an indispensable asset to Black Label.
Cast