Rushie Suginami possesses dark brown hair and brown eyes, working as an office employee with an interest in horror films. Her traumatic experience after a blind date, where online contact Masakazu Meguro sexually assaulted her at a pachinko parlor following their meeting based on shared paranormal interests, motivates her to acquire an SCM device for revenge.

She plans her retaliation meticulously, returning to the same pachinko parlor and challenging Meguro to an SCM duel. The terms involve counting pachinko balls to determine the winner, who gains control over the loser. Rushie strategically withholds trays of balls she won earlier, creating a false impression of Meguro's lead. Revealing her accumulated balls secures her victory, enslaving him.

After winning, Rushie exerts control over Meguro, forcing him to perform self-destructive acts like repeatedly punching himself in the face. Her commands deliberately test the boundaries of the SCM's restrictions, stopping short of life-threatening actions. This torment reflects her approach to exacting vengeance for the assault she endured.