Ren Kanzaki, Doctor "The leader of NEXUS, who never loses his cool in any situation." A veteran emergency physician with experience at numerous rescue sites. He leads the team with outstanding judgment and leadership. He may seem strict, but he trusts each team member more than anyone else.

Mizuki Asakura, Nurse "An action-oriented emergency nurse who stays close to her patients." With a bright and positive personality, she moves faster than anyone else on site. Her creed is to save lives by working together with her colleagues while empathizing with the anxieties of patients and their families.

Minato Shiraishi, Doctor "A young, talented doctor who supports lives with calm judgment." An emergency physician with a composed personality and precise diagnostic skills. He analyzes situations without being swayed by emotion, providing a sense of security to the team. Behind his gentle smile lies a strong sense of responsibility.

Rin Kurose, Nurse "A reliable emergency nurse who combines composure and kindness." She gives a cool impression, but her compassion for patients is deeper than anyone's. She provides precise support to doctors and acts calmly even in high-pressure situations.

Hayato Kiritani, Clinical Engineer "A specialist in medical equipment." Responsible for driving the NEXUS vehicle and managing medical equipment. He handles advanced devices such as ventilators and defibrillators, supporting the medical team on-site. He is a man of few words, but he is deeply trusted by his colleagues.

Yu Nanase, Dispatch Operator "The control tower of NEXUS, supporting the front lines." An operator who delivers information from the command center to the scene. She handles coordination with fire, police, and hospitals to ensure team members can operate safely and quickly. Her calm voice gives the team a sense of security.