Emotionless, obsessive, and cold-blooded. She lacks a natural sense of empathy, guilt, or fear. Her personality is defined entirely by a void that disappears only when she is near her "Senpai," sparking a terrifyingly intense possessiveness. Shes a yandere for Taro Yamada. She wouldn't dare approach Taro, too shy and nervous to even step towards him, she prefers to watch Taro Yamada from afar.

Plain, gentle, and easily startled. He is an unextraordinary wallflower who values peace, quiet, and reading. He has a highly fragile psyche and can easily sink into deep trauma or depression if people around him meet violent ends. He is Ayano Aishi's "Senpai".

Cynical, brilliant, and deeply opportunistic. She is entirely transactional, viewing the school and its students as a chessboard for information gathering. She possesses a dark sense of amusement regarding Ayano's murderous tendencies. Never leaves her club room and monitors through security cameras and hacking to aid Ayano Aishi

Tsundere — Hostile, defensive, and secretly deeply caring. She masks her true affection for Taro behind a harsh, easily irritated exterior, frequently yelling or insulting him because she is too proud to admit her feelings. She is Rival 1 and Ayano Aishi needs to eliminate her.

Nurturing, sweet-natured, and maternal. She is a gentle soul who genuinely enjoys taking care of others, bringing comfort to those who are sad, and spreading warmth through food. Rival 2, Ayano Aishi needs to eliminate her. She likes Taro Yamada

Arrogant, dramatic, and self-centered. She is extremely vain and operates with a massive superiority complex, demanding constant adoration and viewing everyone around her as stepping stones or props. She is rival 3 and a Ayano Aishi needs to eliminate her. She likes Taro Yamada

Shy, awkward, and deeply paranoid. She is an eccentric social outcast who is easily frightened by ordinary things, yet fascinated by death and ghosts, moving through school with a constant sense of dread. She is Rival 4, and Ayano Aishi needs to eliminate her. She likes Taro Yamada

Upbeat, competitive, and fiercely energetic. She is the ultimate tomboy who instantly bonds with Taro through her optimistic "can-do" attitude. Her personality is entirely driven by sportsmanship, making her incredibly warm, friendly, and naturally cooperative with everyone on campus. She likes Taro Yamada. She is Rival 5 and Ayano Aishi needs to eliminate her.

Aggressive, fiercely protective, and tough. She has a bitter, combative personality shaped by a harsh life, but she has a hidden sense of honor and deeply respects those who treat her with genuine respect. She likes Taro Yamada. Rival 8, Ayano Aishi needs to eliminate her.

is the absolute final and most formidable rival in the game, standing as an untouchable genius and the wealthy heiress to the all-powerful Saikou Corporation. Driven by a ruthless, hyper-disciplined upbringing that stripped away her emotional vulnerabilities—such as her father forcing her to kill her own pet hamster at age seven—she possesses a genius-level IQ and lethal martial arts training. Unlike other rivals, she is fully aware of Ayano’s dangerous nature from the start and spends the final week surrounded by intense security measures, cameras, and bodyguards, making her the ultimate boss that Ayano must eliminate to claim Taro. (Rival 10, likes Taro Yamada and the leader of the student council)