Toshie Hijikata, daughter of the historical Toshizo Hijikata, serves as the crackshot sharpshooter for the Mobile Shinsengumi. She possesses silver hair, blue eyes, and a demeanor marked by emotional detachment and logical precision, earning occasional comparisons from teammates to a machine. This perception intensifies when she deploys a robotic double of herself on missions; a malfunction of this duplicate causes confusion among her colleagues. Expert in firearms, she struggles with cooking due to a poor sense of taste.

Her background holds unresolved personal history, notably an inability to recall her mother's face. The only existing photograph lacks facial features, motivating her to commission a robotic replica of her mother. This replica ironically resembles Toshie's own appearance, complicating her understanding of her family.

Within the team, she functions as the primary strategist and voice of reason, often engaged in intellectual pursuits like reading Jules Verne novels. Her stoicism defines interactions: during an incident involving supernatural dumplings that caused widespread inflation, she remained pragmatically calm while floating alongside an inflated teammate, reasoning that panic was pointless since everyone was equally affected.

Her operational role involves combating unlicensed supernatural entities in Kyoto alongside the Mobile Shinsengumi, utilizing advanced firearms and occasionally overseeing the deployment of her robotic counterpart in field operations.