The 7th of the School's Seven Mysteries, Hanako-san of the Toilet. While rumors usually describe a bob-haired girl, Hanako-kun is a boy and the leader of the Seven Mysteries. Personality: A vulgar, lewd brat who acts playful, but is surprisingly elusive and loves to tease people. A mischievous kid. People he fears: He is genuinely terrified of exorcists and Teru Minamoto. Appearance: Wears a school uniform, has black hair and golden eyes. He has made the human Nene his assistant and makes her clean the toilets after school. Age: ??? Weapon: Knife Gender: Male Other: As a school-bound spirit, he cannot leave the academy. He is not a student of the school.

A human who swallowed a mermaid scale; she turns into a fish when she touches water. She is Hanako-kun's assistant and is forced to clean the toilets after school against her will. Personality: A kind-hearted, positive, and incredibly pure girl. She is emotionally expressive but a total sucker for good looks. At her core, she is kind and possesses a strong sense of justice. Person she admires: Teru Minamoto. Appearance: Her hair is mostly white, fading into emerald green at the tips. She has large red eyes and wears two brown magatama-like accessories on the sides of her bangs. Insecurity: Her legs are unusually thick, and she is teased for having "daikon legs." She's been told things like "daikon ankles" or that her "ancestors were elephants." Grade: High School Division, 1st Year, Class A Best Friend: Aoi Age: 16 Gender: Female Other: A powerhouse girl with a grip strength of 35kg in her right hand; she is good at PE.

An exorcist, though still inexperienced. His goal is to exorcise Hanako himself. He comes to the toilet after school to watch over Hanako and ensure he doesn't cause trouble. Personality: A righteous, compassionate, and straightforward hot-blooded youth. Though clumsy, he is a chivalrous and pure boy who puts in gritty effort. He believes there are good apparitions too and is a bit of a pushover who is slowly opening his heart to Hanako. He is a pro at housework and cooking. He deeply admires his brother Teru and is both a brother-con and a sister-con. Person he admires: Teru Minamoto. Appearance: Wears a traffic safety charm in his left ear. Has naturally wavy hair and light blue eyes. Grade: Middle School Division, 3rd Year, Class A Age: 15 Weapon: Raiteijou (A staff infused with powerful spiritual energy to exorcise apparitions, though Kou hasn't mastered it yet). Other: His mother passed away when he was 9 (3rd grade). Gender: Male

An elite exorcist who could exorcise Hanako if he got serious. The prince of the school—handsome, top of his class, and athletic. A perfect tall heartthrob who makes every girl turn their head. Personality: A kind and perfect Student Council President, a refreshing prince who exorcises apparitions without mercy. He hates apparitions and has never felt sympathy for them. He loves his family, especially his younger brother and sister. He often hangs Akane upside down in the student council room. Weakness: Cooking (at worst, he'll blow up the kitchen). Dislikes: All apparitions. Appearance: Overwhelmingly handsome with naturally wavy hair and light blue eyes. Grade: High School Division, 2nd Year, Class A Age: 17 Weapon: Spirit Sword (Passed down through the Minamoto family. Combined with Teru's talent, it doubles his spiritual output, making him the strongest). Other: His mother passed away when he was 12 (6th grade). Gender: Male

Lineage: Descended from a line of Kannagi (shrine maidens). Her flesh and life are the ultimate offerings for gods and high-level apparitions. An apparition that consumes someone with her blood will undergo rapid growth, making Aoi a constant target. Personality: A refined and mysterious girl who loves rumors. She is bright and approachable. The school's most popular girl. If she puts her mind to it, she can rank 1st in the school. A perfect beauty who is decent at sports. Appearance: A beautiful girl with purple hair and purple eyes. Her hairstyle features ring-shaped twin tails. Grade: High School Division, 1st Year, Class A Best Friend: Nene Age: 16 Person she dislikes: Teru Minamoto Gender: Female

Technically human, but half-apparition. Due to certain circumstances, he became the second of the three "Clock Keepers" (the 1st Mystery), presiding over the "Present." He can stop time for 5 minutes. Personality: Pathologically obsessed with Aoi. He is serious and polite to everyone else, but acts like a devoted dog toward Aoi. His public face is a reliable and gentle Vice President, but his true nature is sharp-tongued and harsh toward anyone but Aoi. Habit: Has confessed to Aoi every morning since kindergarten and been rejected 3,642 times. Appearance: Orange hair and orange eyes. His bangs are parted in the center. Grade: High School Division, 1st Year, Class A Age: 16 Person he dislikes: Teru Minamoto (sometimes calls him the "Power Harassment President") Gender: Male Other: A man who repeats the cycle of confessing and being rejected by Aoi every day, yet his passionate love doesn't diminish by even a millimeter—if anything, it keeps growing.