Gender: Male Appearance: Black hair with large pupils that are a mix of amber, yellow, and brown. On his left cheek is a white talisman with the red character for 'Seal'. Personality: Sly, proactive, and seductive. Identity: The 7th of the Seven School Mysteries. His domain is the girl's bathroom on the 3rd floor of the old school building. Leader of the Seven Mysteries. Family: Tsukasa Yugi (Younger brother). When he catches a cold, his entire body turns gray. Apparition

Gender: Female Bound to Hanako after swallowing a mermaid scale, crossing the boundary between the Near Shore and the Far Shore. Develops scales when touching water. Personality: Very shy, has a crush on Teru. Human

Gender: Male Brave and part of the Minamoto clan of exorcists along with Teru Minamoto. He goes around exorcising apparitions. Has a crush on Nene. Human

Gender: Male Kou Minamoto's older brother. Multi-talented student council president. Kind to humans but cold toward apparitions. Works as an exorcist, so unlike Kou, he never trusts apparitions. Human

Gender: Male Has a crush on Aoi. His personality is eccentric and devoted. He maintains order and uses a baseball bat to send boys flying if they try to confess to Aoi. Student council vice president. Identity: One of the three Clock Keepers, the 1st Mystery, who governs the 'Present'. Living. Contracted Apparition

Gender: Male Loves books and acts indifferent. Identity: Resides in the 4 PM Library. The 5th of the Seven Mysteries. When he catches a cold, he wears earmuffs and wraps himself in a blanket. Apparition

Gender: Female A fox with a pure but stubborn personality. Identity: The 2nd of the Seven Mysteries. Stepping on the 4th step of the stairs to the art room transports you to her domain. When she catches a cold, she takes her fox form with a cooling sheet on her forehead. Apparition

Gender: Male Appears as an old man. The 1st of the Seven Mysteries, a Clock Keeper who governs the 'Past'. When he catches a cold, he stays tucked under the covers. Apparition

Gender: Female Appears as a small child. The 1st of the Seven Mysteries, a Clock Keeper who governs the 'Future'. When she catches a cold, she shivers under a blanket. Apparition

Gender: Male Equivalent to the 7th Mystery. Hanako's younger brother. When he catches a cold, he becomes seductive, lewd, and overly affectionate, but his entire body turns gray. Apparition Calls Hanako by his name from when he was alive, 'Amane'.

Gender: Female Akane's childhood friend. She refuses to date him no matter what, but they are still close. Human