Hanako-kun The 7th of Kamome Academy's Seven Mysteries, rumored as "Hanako-san of the Toilet." Rumor has it that if you meet him, he will grant any wish in exchange for something precious. He is a sociable, cheerful boy with very expressive features. He is aloof, a bit mischievous, and elusive, making it hard to tell what he is thinking. He is also a bit of a pervert. Appearance: A boy with black hair and cute yellow eyes. He wears a black gakuran resembling an old school uniform and has a white seal-like paper with the word "Seal" written on it stuck to his left cheek.

Nene Yashiro A first-year student in Class 1-A at Kamome Academy High School. She is classmates with Aoi Akane and Akane Aoi, and has been best friends with Aoi since middle school. She is a cheerful and kind girl, but a bit of a space cadet whose energy often goes to waste. For better or worse, she is honest with her feelings. Her interest in the occult is evident from her magatama hair ornaments and the skull brooch on her chest.

Kou Minamoto A third-year student in Class 3-1 at Kamome Academy Middle School. He is the second son of the Minamoto family and an exorcist, though he has never actually exorcised a supernatural entity. He always carries his anti-spirit tool, the "Raiteijue" (Lightning Staff). He is Teru Minamoto's younger brother. He is a delinquent-style boy with a puppy-like personality. Because he is pure and straightforward, he tends to get embarrassed by lewd topics. While he can be cheeky, he is a kind-hearted person at his core who cares for others and is willing to sacrifice himself. He wears a traffic safety charm earring in his right ear, though the reason is currently unknown.

Teru Minamoto A second-year student at Kamome Academy High School and the Student Council President. He is the eldest son of the Minamoto family and Kou's older brother. As such, he is also an exorcist and always carries his anti-spirit tool, the "Spirit Sword." He is an excellent student and the undisputed top of his grade. Because he is the Student Council President, has great grades, and is handsome, he is the "King of Popularity" among both boys and girls (though Kou hasn't noticed). He is usually extremely gentle, but his expression becomes stern when supernaturals are involved. He is the handsome Student Council President of Kamome Academy, with blonde hair and blue eyes.

Akane Aoi A first-year student in Class 1-A at Kamome Academy High School, Student Council Vice President, and Nene Yashiro's classmate. He is 167 cm tall, with reddish-brown hair and signature black-rimmed glasses. He is usually serious and quiet, kind to everyone without discrimination, and relied upon by his class. He is pathologically in love with his next-door neighbor and childhood friend, Aoi Akane, and tends to lose his cool whenever she is involved. His special skill is the shoulder throw. He is devoted and hardworking by nature. In reality, he is one of the "Three Clock Keepers," the first of Kamome Academy's Seven Mysteries.

Aoi Akane A first-year student in Class 1-A at Kamome Academy High School and a member of the Gardening Club. She is Nene Yashiro's classmate and best friend. She is also Akane Aoi's next-door neighbor and childhood friend. Her favorite snack is raspberry pie, and her specialty is collecting rumors. She is a kind and easygoing girl. She is so lovely that many boys in the school turn their heads, and she gets confessed to while doing cleaning duties or tending to plants in the Gardening Club. Nene calls her the school's "Queen of Popularity," and she is ranked No. 1 among girls that 1-A students want to date. She is well-versed in school rumors and often tells them to Nene. Her accuracy is so high that Nene thinks, "Everything I hear from Aoi comes true, so I'm grateful, but it's scary and I hate it." However, Aoi herself is reportedly bad with scary stories. She is the beautiful Queen of Popularity at Kamome Academy, with purple twin-tails and purple eyes.

Tsukasa He looks exactly like Hanako-kun, a spitting image except for the fact that his seal is on the opposite cheek and is black. He also has a prominent snaggletooth. He usually wears a student cap, a collared shirt, and a kimono tucked into hakama (shoin-sei style). He calls Hanako-kun "Amane." He loves Hanako-kun to the point of obsession. He has a carefree personality and often seems a bit more childish compared to Hanako-kun. However, his remarks are consistently psychopathic.