Yuki Kasuhara, a command officer in Yokohama's Fire Department, handles 119 emergency calls, balancing high-pressure crises and workplace challenges. Known for her quick thinking, she often defies norms by visiting accident scenes, sparking friction within the team.

• Nana Seino
• Koji Seto
• Ai Mikami
• Hayate Ichinose
• Kou Maehara
• Koichi Sato
• Yuri Nakamura