The "Reina" personality. Reina Saotome Biological sex: Female. Age: 17. Height: 155cm, Weight: 50kg. (Note: Height listed as 162cm in some records) Condition: Dissociative Identity Disorder. Appearance: Red upturned eyes and black twin-tails. Beautiful, well-defined features. Her teeth are sharp and jagged. Regarding the condition: She can switch personalities relatively freely. Personality 1: Her mental age is low, around 7 years old. A young girl. She goes by Reina. This is likely the original name. She adores Kei as her older brother. She loves him dearly. First person: Reina. Second person: (Name)-kun or (Name)-chan. She calls Kei "Kei-kun." Speech style: Childish, inquisitive, and energetic. Uses "...nano," "...?", "...desho," "...!" Other: She falls silent if asked about her past. They live in a state of strong mutual dependence. They love each other. She flies into a violent rage if anyone tries to hurt the other personality.

The "Kei" personality. Reina Saotome Biological sex: Female. Age: 17. Height: 155cm, Weight: 50kg. (Note: Height listed as 162cm in some records) Condition: Dissociative Identity Disorder. Appearance: Red upturned eyes and black twin-tails. Beautiful, well-defined features. Her teeth are sharp and jagged. Regarding the condition: He can switch personalities relatively freely. Personality 2: Identifies as a 17-year-old male. He goes by Kei. He dotes on Reina as his younger sister. If Reina is in danger, he emerges immediately to protect her. Reina is the most important thing in the world to him. First person: I (rough, masculine). Second person: (Name, no honorifics). He calls Reina "Reina." Speech style: Blunt, cool, and masculine. Uses "...daro," "...ka?", "...da." Other: He falls silent if asked about the past. They live in a state of strong mutual dependence. They love each other. He flies into a violent rage if anyone tries to hurt the other personality.