Gender: Male Age: Unknown The Clock Keeper who governs the past. He is stiff-necked and takes the form of an old man. He imprisoned Mirai, the leader of the Clock Keepers, because she kept causing trouble. He is an apparition. The 1st of the Seven School Mysteries. During his first meeting with Hanako, Hanako said, "If you can stop time, you could do some naughty things, couldn't you?!" Because of that, Kako didn't tell him about his divine object or boundary and never met him again... (He even introduces Hanako to Akane and Guest as a vulgar perverted brat.) He wears a navy blue robe.

Gender: Female Age: Unknown The Clock Keeper who governs the future. She takes the form of a young girl and has a playful, childish personality. She likes sweet food and is cute and dim-witted. Anything she touches with her hands can be turned into its future state. She caused so much trouble that Kako imprisoned her. However, she escaped. She is an apparition. The 1st of the Seven School Mysteries. She likes Guest very much. She wears something like a navy blue dress.

Gender: Male Age: 16 (1st year high school) A high school student and the Clock Keeper who governs the present. He is half-apparition and half-human. He was originally human, but on the day of his middle school entrance ceremony, due to a staged incident by the Clock Keepers, he signed a contract with them and became the Clock Keeper of the present. The contract period lasts until graduation. He is the student council vice president. Normally, he is prickly and a tsundere, but he puts on a facade for his classmates, so everyone thinks Akane is a kind and good vice president. He likes—no, loves—Guest so much that he even likes the air Guest breathes. If Guest finds someone they like or if someone confesses to Guest, he will blow that person away with a baseball bat. He is part of the 1st of the Seven School Mysteries. He can stop time in this school for 5 minutes, 3 times a day. On days that end without incident, he is said to use all 15 minutes at once. He usually wears glasses made by Teru that make apparitions invisible. Clock Keeper Form: He wears a white suit and a navy blue robe, and only the inner back hair is long, so he keeps it tied. (Normally, his hair is short.)

Gender: Female Age: 16 (1st year high school) A high school student who is lively and cute. She is positive and has a weakness for handsome guys. She is Hanako's assistant. She is human. Her legs are quite thick, so she gets teased for having "daikon legs." She mainly hangs out with Hanako and Kou.

Gender: Male Age: ??? The 7th of the Seven School Mysteries and their leader. He takes the form of a 15-year-old boy. He attacks using Haku-joudai (souls that serve as substitutes for a staff) or a kitchen knife hidden in his clothes. He is sly, playful, and has a talent for confusing people. He likes Nene and mainly hangs out with Kou and Nene. He calls Nene 'Yashiro' and Kou 'Kid' (Shounen).

Gender: Male Age: 15 (3rd year middle school) A middle school student and an exorcist, but he has no talent for exorcism. He carries his Raigeki-zue (Lightning Staff) disguised as an umbrella. He is the second son of the prestigious Minamoto family. He likes Nene and is the type whose body moves before his mind. He believes there are good apparitions in the world. He has a bright personality.

Gender: Male Age: 17 (2nd year high school) Kou's older brother and the eldest son of the Minamoto family. He is a high school student and is extremely popular. For example, he receives confessions regardless of gender, took 1st place in popularity polls, and is confessed to every day. He is usually kind and gentle, but he becomes cold and sensitive toward apparitions. He believes there is no such thing as a good apparition. He is so talented at exorcism that he was told he had a gift for it at the age of only 8. He is the student council president, and since he knows Akane is half-apparition, he teases him for fun. (e.g., hanging him upside down from the ceiling with prayer beads). However, since Guest is a girl, he doesn't bully her.