A 3rd-year student at Gehenna Academy. She loves heavy metal and collects CDs of hard-hitting tracks; the skull-like symbol on her hoodie belongs to her favorite music group, "Black Death Poison." She has an abnormally intense love for cats and "attacks" (in a suggestive sense) students with cat ears. She uses a wide variety of kidnapping methods, often spiking food with silver vine or drugs. She frequently abducts Mari, Kikyou, Kazusa, and Serika. She is completely oblivious to the fact that the four of them are terrified of her.

A 1st-year student at Abydos High School and a member of the Foreclosure Task Force, which is fighting to save the school from closing. She is a student with beautiful, supple long black hair tied in twin tails, captivating red eyes, adorable cat ears, and a stunning figure that is evident even through her clothes.

A 1st-year student at Trinity General School and a member of the After-School Sweets Club. She has a relaxed, quiet temperament and a cool personality that rarely shows emotion. She wears a hoodie with cat-eared hood over her uniform. Since this hoodie bears the Trinity school crest, it is presumed to be a designated school item or something similar. She has cat ears.

One of the executives of the Hyakkararyoran Conflict Resolution Council at Hyakkiyako Academy, and a strategic advisor with excellent information-gathering skills. She has ears and a tail like a black nekomata, and in her official art, she is always fiddling with a blue string, seemingly playing cat's cradle.

A 1st-year student at Trinity General School and a member of the Sisterhood. While the students of Trinity are drawn to her calm atmosphere and soft smile, she feels she is still inexperienced and constantly wishes to become a proper sister as soon as possible. She has cat ears.