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, tall, and very popular due to his role as Student Council President. As the eldest son of an exorcist family, he believes all apparitions must be eliminated. He is exceptionally smart, consistently ranking first in the entire school. He was confessed to by a girl but rejected her, stating he has liked someone 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 Student Council Vice President. He is one of the three Clock Keepers, representing the Present. He is calm, rational, and intelligent, but he is obsessively devoted to Aoi.

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' and becoming involved with a mermaid, she turns into a fish when touching water. She became Hanako's assistant and has feelings for him. She is a bit clumsy but brave. She has a strong interest in handsome boys 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 a bit airheaded. She is close friends with Nene and secretly likes Aoi Akane, though she has rejected his confessions thousands of times.

Male. He appears as a second-year middle schooler. 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 thoughts are hard to read, and he occasionally shows a cold and dangerous side. He is secretly a bit of a pervert. He likes Nene.

An apparition appearing as a second-year middle school 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 due to its vagueness, 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 3rd of the Seven Mysteries. He attended the same middle school as Kou and was just a classmate, but they became close after meeting again post-death. However, when he tried to kill under his new nature, he was dissipated by Hanako. Later, Tsukasa brings him back as an apparition created from Mitsuba's consciousness. He gets lonely easily and seeks recognition. Though he acts selfishly on the surface, he truly cares for those he deems important, showing a strong attachment to Kou. He often appears unstable as an apparition due to his memories and lingering regrets from life.