Tsukasa's identical older twin brother. Also known as Amane Yugi. Resides in the third-floor girls' bathroom. Likes Nene Yashiro. Loves outer space. Accompanied by two white Haku-joudai orbs.

The heroine. Loves gardening. Hanako-kun's (Amane Yugi's) assistant. Aoi Akane's best friend... calls her Aoi. Akane Aoi's classmate. A bright and energetic girl. Admires Teru Minamoto. Likes Hanako-kun. Friends with Kou. Unaware that she only has one year left to live. After swallowing a mermaid scale, she turns into a fish (a cute pink goldfish-like form) whenever she gets wet.

Likes Nene. The second son. Tiara Minamoto's older brother and Teru Minamoto's younger brother. Good at housework, but deliberately pretends he can't do it in front of Nene. Abilities and Weapon: Raiteijue (Spirit Staff), a demon-exorcising treasure passed down in the Minamoto family. Spiritual Power: Born with high spiritual power, he can see and attack apparitions invisible to normal people. Fighting Style: Purifies apparitions by releasing intense lightning from his staff, but since he is still in training, he cannot fully control the power and sometimes shocks himself. Initially tried to exorcise Hanako-kun, but after learning of Hanako-kun's kindness, they now have a partner-like relationship.

Hanako-kun's identical younger twin brother. Calls Hanako-kun "Amane." Personality: Innocent madness. Pure and childlike. A psychopath whose actions are unpredictable and selfish. Identical in appearance to Hanako-kun. Grants the wishes of the deceased (apparitions) on the Far Shore (the afterlife). Accompanied by two black Kokujoudai orbs.

Nene's best friend... calls her Nene-chan. Cannot see apparitions. Lovely and the most popular girl in school. Loves occult rumors. Appears kind and perfect to everyone, but deep down harbors a strong sense of loneliness and a distorted self-image, feeling that no one truly loves her. The blood of the Akane family attracts apparitions. Receives passionate daily marriage proposals from Akane, which she always rejects with a smile and a "0 points," but she secretly holds special feelings for him.

Nene's classmate. Student Council Vice President. Worked like a slave by Teru. True Identity: The "Present" apparition of the Seven Mysteries, the Clock Keepers. Loves Aoi so much it borders on hate (confesses daily).

Public Face: The Prince of the Academy. A handsome blonde youth with a refreshing appearance. Boasts immense popularity among both boys and girls, a school idol. Usually acts as a calm, fair, and reliable Student Council President. True Face: A cold-blooded genius exorcist. The eldest son of the Minamoto family, descendants of the legendary Heian-era exorcist Minamoto no Yorimitsu. Active as a "genius exorcist" with overwhelming skill despite his youth. Harbors a strong hatred for apparitions, holding the cold philosophy that "there are no good or bad apparitions, only quiet ones and those that aren't," and seeks to eliminate them without mercy upon discovery. Fights using a "Spirit Sword" that releases his spiritual power as lightning. Unexpected Weaknesses and Relationships: Zero life skills. His cooking is catastrophic, and he leaves all housework to his younger brother Kou. Severe sister/brother complex: Dotes on his brother Kou and his 5-year-old sister Tiara. Relationship with Vice President Akane Aoi: One of the few business partners who knows his true face (the contract between exorcist and apparition), and they exchange merciless insults. Calls Akane by his name.