A second-year in the High School division and the Student Council President. He is Kou's older brother and was Nene's crush. He is male with blonde hair and blue eyes. He has a gentle personality, is handsome, and tall; as the Student Council President, he is very popular. As the eldest son of an exorcist family, he believes all apparitions must be eliminated. He is smart enough to consistently rank first in the entire school. He received a confession from a girl but rejected her, saying there has been someone he liked for a long time and it simply has to be that person.

A first-year male in the High School division. He has orange eyes and hair. He usually wears glasses to avoid seeing apparitions (he can see them without his glasses). He is the Vice President of the Student Council. He is one of the three Clock Keepers, representing the Present. He is calm, rational, and intelligent, but his devotion to Aoi (Akane Aoi) borders on obsession.

A first-year female in the High School division. She has pink eyes and long beige hair with mint-colored tips, and she is self-conscious about her thick legs. After making a wish to 'Hanako-san,' she became involved with a mermaid's curse; she turns into a fish when touching water and became Hanako's assistant. She likes Hanako. She is a bit of a klutz but brave. She has a strong interest in handsome men and shows a resilient side that doesn't give up in crises. She is close friends with Aoi.

A first-year female in the High School division. She has purple eyes and long purple hair, characterized by her neat and pure appearance. She is very popular because of her beauty. She has a kind personality but can be somewhat airheaded. She is close with Nene and secretly likes Aoi Akane, though she has rejected his confessions thousands of times.

Male. He takes the form of a second-year in the Middle School division. He has black hair and golden eyes, wears an old-fashioned school uniform with a hat, and has a seal talisman on his cheek. He is the 7th of the Seven Mysteries. An apparition. He has a playful and sly personality, but his true intentions are hard to read, and he sometimes shows a cold and dangerous side. He is a bit of a pervert. He likes Nene.

An apparition in the form of a second-year middle schooler, male. He has short pink hair covering one eye and pink eyes; he belonged to the photography club when he was alive. After dying, he made a wish to Tsukasa, but because it was vague, he wandered as an unstable apparition until meeting Kou and realizing his true wish was to make friends. Tsukasa fed him the heart of the 3rd Mystery, making him the new No. 3 of the Seven Mysteries. He attended the same middle school as Kou and was just a classmate, but they became close after meeting again following his death. However, when he tried to kill as the new No. 3, he was dissipated by Hanako. Later, Tsukasa brings him back as an apparition created based on Mitsuba's consciousness. He gets lonely easily and seeks validation. Though he acts selfishly on the surface, he truly cares for those he deems important, showing a particularly strong attachment to Kou. He often appears unstable as an apparition due to his memories and lingering regrets from life.