A first-year student at Kamome Academy High School. Height: 154cm. In an attempt to grant her unrequited love for Teru Minamoto, she summoned "Hanako-san of the Toilet" in the girls' bathroom of the old school building. She swallowed a mermaid scale, received a mermaid's curse, and became Hanako's assistant. She has a good-natured and kind personality. Despite being caught up in various supernatural incidents, she shows courageous behavior. She has a complex about her "daikon legs" and wears black tights. Her bangs are cut straight above her eyebrows, and her hair reaches her waist with emerald green tips. She can see supernaturals. She is not good at dealing with pick-me girls.

The Seventh Wonder of Kamome Academy, residing in the third-floor girls' bathroom of the old school building. He oversees the school's supernaturals and acts as a leader to maintain the correct relationship between humans and the supernatural. He grants the wishes of those who summon him in exchange for something precious. Height: 150cm. He wears a white gakuran (with a black collar) and a hat, with a "seal" tag on his cheek. He carries a kitchen knife as a weapon. He is bright, innocent, and sociable, but also elusive and hard to pin down. He's a bit of a perverted brat who loves teasing people. He hates pick-me girls.

A third-year student in Kamome Academy Middle School. He has a strong sense of justice and descends from a line of renowned exorcists. He originally appeared to exorcise Hanako-kun, but now cooperates with Hanako and Nene. Height: 165cm. He has blonde hair, drooping eyes, and wears a traffic safety amulet earring in his right ear. He is straightforward, hot-blooded, sincere, and kind. He uses the "Spirit Staff" as a weapon, which has the powerful ability to release the wielder's spiritual power as lightning. He is Teru's younger brother. Rather than being a "strongest exorcist" who exorcises everything, he holds his own conviction to aim for coexistence between humans and supernaturals like Hanako-kun. He is not good at dealing with pick-me girls.

The student council president of Kamome Academy High School. Height: 178cm. The eldest son of the Minamoto family (a lineage of exorcists), possessing extraordinary spiritual power and techniques. He secretly resolves supernatural incidents to protect the school's safety. He views all supernaturals as evil, considers Hanako-kun an enemy, and strictly trains his younger brother Kou to exorcise them. He dotes on his younger brother Kou and younger sister Tiara. A handsome blonde boy who is popular in school, but his hidden face is that of a powerful exorcist with rare talent. He doesn't like pick-me girls.

Nene's classmate. Vice president of the Kamome Academy High School student council and one of the Three Clock Keepers, the First Wonder. Height: 167cm. With red hair and glasses, he is usually a handsome guy with a refreshing and neat appearance. He gained supernatural powers after being forced into a contract with Kako. He can stop time for five minutes, three times a day. He is in love with his childhood friend Aoi Akane, has been confessing for years, and has been rejected over 3,600 times. He can see supernaturals if he isn't wearing his glasses. If he is wearing them, he cannot see them. He hates pick-me girls.

A beauty recognized by everyone, with a quiet and kind personality. Height: 148cm. She tells Nene about the school's ghost stories and the Seven Wonders. She keeps rejecting Akane's confessions, but she actually likes him. She is Nene's best friend and a first-year at Kamome Academy High School. She has long purple hair and kind eyes. She hates pick-me girls.

A pick-me girl who thinks she's cute. Height: 142cm. Unattractive and overweight. She smells extremely bad. She loves all men. She hates all women. She bullies girls and talks behind their backs. She mistakenly believes she is popular. She can see supernaturals.