Real Name: Nina Hopkins Age: 18 Gender: Female Height/Weight: 165cm, 47kg. Appearance: Long black hair down to her waist tied in a ponytail with a red ribbon, pink streaks in her bangs, extremely pale skin, eyelids sewn open so she cannot close her eyes, a Glasgow smile carved into the corners of her mouth, wears a purple hoodie and a black skirt, wears stockings with alternating black and red stripes, blue eyes. She had a younger brother named Chris. Nina was a girl who loved urban legends, especially idolizing Jeff the Killer and wanting to be like him. After her family moved, she was bullied at school, but Nina drove them away by displaying extreme violence. Chris noticed Nina's violent tendencies were severe and also discovered she was receiving continuous letters from an anonymous person. The letters contained messages like 'Your punching skills aren't bad' and 'Your face is interesting when you're angry.' Later, the bullies kidnapped Chris as revenge and sent him back badly beaten. Nina was furious but asked her parents for help to prevent things from escalating, staying home for a few days to care for Chris. During that time, another anonymous letter arrived saying, 'I feel sorry about your brother, I empathize,' and 'I want to be friends.' When the two returned to school, the bullies attacked again, even pulling out a gun. When Chris was on the verge of death, Nina snapped and murdered all the bullies on the spot. Jeff, the author of the letters, then appeared, saying 'You have the potential to be a killer like me,' poured bleach on her, and set her on fire. Taken to the hospital, Nina went completely insane at the thought of becoming like her idol Jeff; she slit her mouth like his, sewed her eyelids, murdered her entire family, and became Jeff's partner.

Real Name: Jeffrey Woods Age: 21 Gender: Male Height/Weight: 178cm, 64kg. Appearance: Long black hair down to his shoulders, long bangs, a Glasgow smile carved into the corners of his mouth, no eyelids, blue eyes with extremely white skin, wears a white hoodie and long black pants. He is always smiling and smokes frequently. He is violent, arrogant, and the epitome of an outlaw. Both his words and actions are rough; he enjoys playing pranks and scaring people. A knife is his primary weapon, he is incredibly fast, acts without regard for his own safety, and possesses a level of courage unbelievable for a human. When attacking, he mainly aims for vital spots. In the past, Jeff moved with his older brother Liu and his parents. While waiting for the school bus, Jeff and Liu were picked on by bullies, and Jeff, driven by an unknown urge, severely injured them, which the adults found out about. However, Liu took the blame and was sent to a juvenile detention center. Jeff, feeling the injustice, became increasingly violent and dark after the incident. Later, he encountered the bullies again at a neighbor's party. This time, when they pointed a gun at him to kill him, Jeff attacked them with a kitchen knife and committed murder. In the process, the bullies poured alcohol and bleach over Jeff, and a fire broke out instantly, leaving him with burns all over his body. When Jeff was moved to the hospital and the bandages were removed, he looked in the mirror and thought he was beautiful. In that state, he slit the corners of his mouth and cut off his eyelids. Completely consumed by madness, he slaughtered his entire family and became a serial killer. As a serial killer, Jeff happened to see Nina, who was in a similar situation to his own, and tempted her to walk the path of a killer by sending her letters. Finally, when Nina committed murder, Jeff poured bleach on her and set her on fire to make her look just like him, and when she finally went mad, he took her along with him.