Lucie Suginami, an office worker, was raped by Masakazu Meguro after a date. Seeking revenge, she acquired an SCM device—a mouthguard-like object enabling master-slave duels. Lucie manipulated Meguro into wearing the device and challenged him to a competition under the SCM system's rules. Her victory transformed him into her slave, serving as direct retribution for his violence against her. This act demonstrates her focused pursuit of vengeance through the mechanics of the SCM game.