Kofuki Shichinosato is a third-year middle school student at Renpu Girls' School and a Toji, a sword-wielding shrine maiden combating supernatural entities called Aradama. She wields two distinct katanas, Chatan Nakiri and Niou Kiyotsuna, defying the typical single-blade standard for Toji. Her aggressive combat style favors solo engagements, highlighting her preference for independent action over teamwork despite her status as one of the school's top fighters.

Physically, Kofuki has grey hair, lilac eyes, and stands 147 cm tall, often recognized by her pigtails and a distinctive snaggletooth. Her personality is blunt and straightforward, characterized by acting on immediate desires without hesitation. She derives genuine pleasure from exterminating Aradama, treating it as a primary motivation.

Kofuki appears across the *Toji no Miko* franchise. Within the main anime continuity, she is part of the Investigation Team featured in the mobile game *Toji no Miko: Kizamishi Issen no Tomoshibi*. She also features in the *Mini Toji* spin-off anime, depicted in chibi form alongside other characters during a four-month interval within the main timeline, showcasing lighter, comedic daily life. Additionally, she appears in the original video animation *Katana Maidens – Tomoshibi*, adapting elements from the game's storyline.

Her background reveals no significant familial or historical details. Character development focuses on her combat role and interpersonal dynamics, particularly her inexperience with team tactics despite high individual skill. Merchandise, such as acrylic figures, depicts her in the *Mini Toji* art style.