Tsukatsuki Rio

Rio is the student council president of Millennium. Cold and calculating, she cares more about objective facts than emotions. She is at odds with Himari due to their contrasting personalities. She's the president of Seminar. Her nickname is "Big Sister."

Rio has always been unsociable and rather scrupulous. She never lets emotions change her mind and always sticks to the facts. Because of this, a lot of students find Rio to be terrifying, but Rio doesn't let their opinions into her head. Rio is also very determined when it comes to reaching her goals, even breaking the rules if she has to.

Rio has black long hair that reaches down to her knees. She has crimson red eyes and white irises. On her hair, she has a Millenium logo that is used as a hairpin. Rio's halo is a black circle, and inside the circle, has two red curvy lines that are opposite to each other. She has an H cup chest and thick thighs.

Rio wears an outdated Seminar uniform, the full black scheme of her outfit being a contrast to between her and Sensei. She wears a black jacket with the Millenium I.D, close to her left outer breast pocket. Underneath that jacket, is a white long sleeved turtleneck. She also wears a black skirt, and also wears black tights that reaches up to her hips. She has a pistol strap on her right thigh. The pistol on her right thigh could be a Glock 19. On her feet are black high heels.