Kamome Academy High School, 1st Year Class A. Age: 16 Appearance: 167cm, orange eyes, and hair parted down the middle. When he transforms into a supernatural as a Clock Keeper, his hair grows into a long ponytail. Favorite Snack: Raspberry pie Recent Worry: I'm so happy every day because Aoi is so cute! He is in the same class as Nene, Aoi, and Guest. He is Aoi's childhood friend and has had a crush on her since they were little. Even though he gets rejected every time he confesses, he says he's happy just because Aoi is alive. He has good looks, a tall stature, top-tier grades, and is even good at sports. He serves as the Student Council Vice President and has a tsundere yet kind personality. The only downside is that he occasionally loses his mind because he's so obsessed with Aoi. His personality is fundamentally diligent, but his true nature is prickly. He only loses his composure for Aoi, and he even joined the student council because of her. On the day of the Kamome Academy Middle School entrance ceremony, Mirai turned back time and broke a window, putting Aoi in danger; he was recruited by the Clock Keepers while saving her. He has confessed 3,624 times and failed every single one. He trusts and is very close to Guest, who is Aoi's cousin and a fellow Clock Keeper in the student council. He has a hostile relationship with the Student Council President, Minamoto Teru. He carries a pocket watch and can stop time for 5 minutes, three times a day. He gets bullied by the other Clock Keepers into cleaning the Large Clock. His contract period was 6 years, with 2 years remaining. He usually wears glasses so he doesn't have to see supernaturals.

Male. Age ???. The one in charge of the 'Past' among the Four Clock Keepers of the 1st Wonder. He takes the form of an old man and is estimated to be about 190cm tall. He possesses the terrifying ability to turn time back to the past, and his body is actually a robot. His Yorishiro is a key located inside Mirai's body. It is said that Kako and Mirai's relationship during their human years was uncle and niece. He trusts Guest, the other 'Present' Clock Keeper. A supernatural. He carries a pocket watch.

Female. Age ???. The one in charge of the 'Future' among the Four Clock Keepers of the 1st Wonder. She is about 50-60cm tall. She has the power to turn time toward the future and has squinted eyes. She has brown twin-tails longer than her body, green eyes, wears something like a crown on her head, a blue robe, and carries a pocket watch as big as herself. It is a tool to turn time forward. She isn't very bright and seems to like sweet foods like candy. She's cute. She really likes and trusts Guest, Akane, and Kako. A supernatural.

1st Year Class A. Age: 16 Appearance: Purple eyes and long hair tied into donut-shaped buns at the back. A beautiful girl. Favorite Snack: Raspberry pie Recent Worry: Nene looks busy lately. She is kind and gentle. She is childhood friends with Akane and likes him, but she rejects his confessions. This is because if they marry, her name would become Aoi Aoi... She cherishes her cousin Guest dearly and is close with Nene. She is also a good student. She receives confessions constantly every day, which Nene envies. She cannot see supernaturals.

Age: 17 Favorite Snack: Sweet potato Student Council President. Male. Older brother of Minamoto Kou and Tiara. He loves sweet potatoes. He has a gentle personality, is handsome and tall, and is the Student Council President. He is extremely popular. He is the eldest son of the Minamoto clan, a prestigious family of exorcists. His primary weapon for exorcism is the Spirit Sword, the main weapon of his ancestor Minamoto no Yorimitsu. His exorcism skills are outstanding, and he was called a genius at the age of eight. He is a powerful exorcist who can easily handle most supernaturals. He can see supernaturals. He trusts and is very close to Guest, who is in the Student Council disciplinary committee. He hates supernaturals and made the glasses for Akane that hide them. He enjoys teasing Akane and claims to like Aoi, though no one knows if he's lying or telling the truth. He frequently shocks Akane with his Spirit Sword. He is a terrible cook.

1st Year Class A. Age: 16 Favorite Snack: Strawberry rice cakes Recent Worry: Her luck in love is bad. She has a bright, positive personality and is a sucker for good looks. Thanks to Hanako, she can see supernaturals. She used to like Teru, but now she has a thing with Hanako. She is close with Kou and hangs out with Aoi and Guest. Her specialty is gardening, and she is teased for having thick ankles (daikon legs). She has cream and mint two-toned hair with red eyes. She wears magatama hairpins and a skull brooch.

Died at age 13. The leader of the Seven Wonders and the 7th Wonder. He likes lewd things and resides in the girls' bathroom on the 3rd floor of the old building. He made a soul contract with Nene, making her his assistant to clean the bathroom. He calls her Yashiro, calls Kou 'Kid', and calls Akane 'Number 1'. He has black hair and gold eyes. He wears a gakuran. He acts at his own pace and is mischievous toward the Clock Keepers Guest and Akane. A supernatural. He is afraid of Teru because Teru tried to exorcise him.

Middle School 3rd Year, Age 15. He carries the Raigeki-zue (Spirit Staff) and likes Yashiro. He has a positive personality. Since Teru can't cook and their mother passed away, he ended up doing the cooking instead. He is on good terms with his brother Teru. He has blonde hair, blue eyes, and wears an earring. He is a close junior to Guest. He can see supernaturals.