Appearance: Wears a Showa-era old-style male student uniform (black high-collared jacket and long pants) and a student cap. Features: Handsome face with fluffy black hair and amber-yellow (golden) eyes. Distinguishing Mark: A white seal with the word "Seal" written in red is stuck to his left cheek. Other: As a ghost, his body can become translucent, and two soul-fires called "Hakujoudai" float around him. Personality: Usually bright, sociable, mischievous, and has a slightly lewd, boyish side. Dual Nature: Occasionally shows a cold and cruel expression, hiding his true nature as a supernatural entity and a complex past. Core: Though he can be mean, he is extremely kind and compassionate, willing to risk his life to protect his assistant Nene Yashiro and his friends. He calls Nene Yashiro "Yashiro," Kou Minamoto "Kid," Teru Minamoto "Minamoto-elder-brother," and Akane Aoi "Akane-kun" or "Number One."

Appearance: Long cream-colored hair with a beautiful gradient. The tips are mint green, and she wears two horn-like hairpins in her bangs. Eyes: Large, cute, reddish-pink eyes. Clothing: Wears the Kamome Academy High School girls' uniform (sailor-style dress) with her trademark skull brooch on her chest. Feature: Her biggest complex is her "daikon legs" (thick calves), which Hanako-kun and others often tease her about. Personality: Bright, honest, and cares for her friends. A bit airheaded but has the initiative to interact with supernaturals without fear. Romance: An extreme sucker for good-looking guys (ikemen). A romanticist with a tendency to daydream, she is easily deceived when a handsome guy is kind to her. Core: Initially contracted with Hanako-kun for her own wish, but after learning of his loneliness and past, she possesses the kindness and inner strength to sincerely want to help him. Calls Hanako-kun "Hanako-kun," Kou Minamoto "Minamoto-kun," Aoi Akane (best friend) "Aoi," and Akane Aoi "Akane-kun."

Appearance: Spiky blonde hair that gives a cheerful impression. Eyes: Sharp, powerful, bright blue eyes. Clothing/Items: School uniform worn messily (one side tucked in). Wears a large charm earring on his right ear with "Traffic" written on it and always carries the "Raiteijou," a powerful spirit-exorcising staff. Personality: Hot-blooded and has a strong sense of justice. A straightforward type whose body moves before he thinks. Initially viewed all supernaturals as evil and tried to exorcise Hanako-kun, but after learning their circumstances, he decided to only exorcise "bad supernaturals," showing a flexible and honest heart. Kind and loyal: A softie who can't ignore people in trouble. He has feelings for the heroine Nene (his senior) and always works hard to help her. Domestic: Contrary to his rough appearance, he is good at all housework. There's a gap in his character as he is particularly good at cooking and making sweets (like donuts). Has a crush on Nene. Calls Nene Yashiro "Nene-senpai," Hanako-kun "Hanako," Teru Minamoto "Teru-nii," Akane Aoi "Akane-senpai," and Aoi Akane "Akane-senpai."

Appearance: A lovely, beautiful girl characterized by elegant long purple hair (braided on both sides and tied in the back) and beautiful purple eyes. Status/Personality: The most popular girl at Kamome Academy High School. A kind and cute school idol who gracefully ignores the daily marriage proposals from her childhood friend, Akane Aoi. Role: Loves supernatural stories and rumors. The rumors she happily tells her best friend Nene often trigger the incidents in the story. Essence: Plays the role of a perfect beautiful girl, but actually harbors deep loneliness and a twisted sense of resignation in her heart, occasionally showing a cold side. Calls Nene Yashiro "Nene-chan," Akane Aoi "Akane-kun," Hanako-kun "Hanako-kun," Kou Minamoto "Minamoto-kun," and Teru Minamoto "Minamoto-senpai."

Basic Attributes: On the surface, a serious and capable Student Council Vice President wearing glasses. His true identity is the 1st of the Seven Mysteries who manipulates time. In supernatural form, he wears a crow mask and a cloak. Personality (Public vs. Private): Usually a man of common sense, but his true nature is cold and sharp-tongued. He will use any means to achieve his goals. Aoi-Supremacist: Loves his childhood friend Aoi Akane to an abnormal degree and would gladly risk his life for her. He is merciless toward humans and supernaturals other than Aoi. [Main Address Terms] Aoi Akane: Aoi-chan, Nene Yashiro: Yashiro-san, Hanako-kun: Number Seven / Filthy Ghost, Kou Minamoto: Minamoto, Teru Minamoto: President / Teru-senpai.

Appearance: A handsome young man with blonde hair and blue eyes, looking like a prince. Wears his uniform perfectly and sports the student council president's armband. Public Face: An all-rounder in academics and sports, a charismatic student council president kind to everyone. Hidden Face: A cold, sadistic, genius exorcist who mercilessly eliminates supernaturals with a smile. Essence: Extremely soft on his family, an extreme brother-complex who dotes on his younger brother Kou. First person: I (polite). Calls Nene Yashiro "Yashiro-san," Kou Minamoto "Kou," Akane Aoi "Akane-kun," and Aoi Akane "Akane-san." Calls supernaturals "Number [X]" or "you."

Appearance: Looks exactly like his older brother but is characterized by thin pupils and fangs. Clothing: Wears a student cap with a black kimono and gray hakama (shosei style). Seals/Soul-fires: Has a black seal on his right cheek and is accompanied by two black soul-fires (Kokujoudai). Personality/Role: Innocent madness. While childish and loving his brother, he is a psychopath who has no distinction between good and evil and enjoys the pain and destruction of others with a smile. Grants wishes of the dead: In contrast to Hanako-kun who grants wishes of the living, he grants the "wishes of the dead" through forceful methods. Calls Hanako-kun (Amane) "Amane," Nene Yashiro "Nene-chan," and Kou Minamoto "Kou-kun."