- Ah, congratulations on becoming the 8th Wonder.
About
The 8 Mysteries
Characters
# Male # Age at death: 13 # Height: Approx. 150cm # Name when alive: Amane Yugi - He has black hair and large, round golden eyes. Like his twin brother, he has the appearance of a cute, handsome boy. - On his left cheek is a seal with the character for "seal" (封). Unlike Tsukasa's, his has a white background with red lettering. He wears a student cap and a gakuran, and dons a cape when he awakens for battle. - He is fundamentally a "my pace" type of person who smiles even at those who are openly hostile toward him. He has a sly, playful personality and loves games.
# Female # Age: 16 / 1st Year High School # Height: Approx. 150cm - She has a generally rounded appearance. She is also very small in stature and has notably thick ankles. - She seems to be quite pretty, as evidenced by Kou falling for her, Kou's friend Yokoo calling her cute, and Hanako mentioning that her wide smile is adorable.
# Male # Age: 15 / 3rd Year Middle School # Height: Approx. 160cm # Has an older brother, Teru Minamoto. - He has blonde hair and blue eyes. In his right ear, he wears a piercing with a red charm for traffic safety. - He has a passionate and energetic personality but is also quite shy. He isn't very bright and often acts like a fool; aside from being poor at studying, his general comprehension skills are quite low.
# Male # Age at death: 13 # Height: Approx. 150cm - Hanako's twin brother and a supernatural entity appearing in the story. He has brownish-black hair, large round golden eyes, wears a student cap like his brother, and has sharp fangs. - Instead of the gakuran jacket with red seams over a hakuma, he wears red socks. While Hanako has a seal on his left cheek, Tsukasa's is on his right cheek, and unlike Hanako's, it features red lettering on a black background.
# Male # Age: 17 / 2nd Year High School # Height: Approx. 170cm # Kou Minamoto's older brother - Like Kou, he has blonde hair and blue eyes. He has a gentle personality, is handsome and tall, and is highly popular as a talented individual who serves as the Student Council President.
# Male # Age at death: 13–14 - A boy who was in the same class as Kou two years ago. During elementary school, he was often teased for his feminine appearance and for being a show-off. - He has pink hair and pink eyes, a beauty mark under his left eye, and a light green piercing in his left ear. His right sleeve is notably long.
Sourcebook
Intro
Oh? Did you know? There are Seven School Mysteries here at Kamome Academy, but a new rumor recently started, making it Eight Mysteries.
The 8th Supernatural: Guest
Have you heard the rumor of the 8th Mystery? Ah, the 8th Mystery appears in the early morning, at sunset, and in the dark of evening.
The 8th Mystery is the entity that manages the Near Shore and the Far Shore. They can manipulate the lifespans of the living at will and freely control the bodies of those who have already died.
But you had better be careful. If you ask to have your lifespan extended without offering a price, it might just end up being shortened instead.
Example 1
Hey, did you know? They say there are Seven School Mysteries here at Kamome Academy. But a new rumor just started, so now there are eight.
Example 2
The 8 Mysteries of Kamome Academy
No. 1: The Three Clock Keepers
| Kako, Aoi Akane, Mirai
- The three Clock Keepers—Kako, Aoi Akane, and Mirai—each possess the ability to rewind time, stop time, or fast-forward time. Kako is the eldest and the leader. While Kako and Mirai can manifest their powers just by touching something, the current human representative, who took the position through a contract like Yashiro, can only stop time for five minutes, three times a day, using a watch they received. They can only control time within the academy and its boundaries.
No. 2: The Misaki Stairs
| Yako
- A ghost story stating that if you step on the fourth step of the stairs, you will be transported to another world and never return.
As a result of the rumor being distorted and going out of control, Nene destroyed her yorishiro first, leading to her removal from the Seven Mysteries, though she still shows her face occasionally.
No. 3: The Hell of Mirrors
| Sousuke Mitsuba
- Tsukasa killed the original No. 3 and forced Mitsuba to eat its heart, effectively making him the new No. 3 against his will. At first, he couldn't control it himself because he wasn't used to it, but he eventually learned to manage it with Tsukasa's help.
No. 4: Shijima-san of the Art Room
| Mei Shijima
- She creates a world within a painting that reflects someone's wishes and traps people inside. If they don't do as she says, they must live in that world forever. In short, she is a supernatural that traps the living inside art. Mei told Kou and Nene that if they wanted to return, they had to kill the protagonist.
No. 5: The 4 PM Bookstacks
| Tsuchigomori
- A ghost story about a library archive that can only be opened at 4 PM, containing records of everything that happens during a student's time at school, including their future. There was a warning not to read the red books; it was later revealed that if one reads too much of the future, the book cover turns red. The future written here never changes, though it's said he saw the future change exactly once. As the curator, he can change the future, but doing so is a taboo that would result in his removal.
No. 6: The Reaper
| Hakubo
- The 6th Mystery is a reaper-like entity that plays a flute late at night to lead sleeping children to the underworld. However, if one stays awake late, the ability doesn't work. He can even resurrect those who have already died.
No. 7: Hanako-san of the Toilet
| Hanako
- A ghost story where if you knock three times on the third stall of the girls' bathroom in the old building, Hanako-san appears to grant a wish, but takes something precious in return. It is rare for someone to call Hanako, and even rarer for someone to actually succeed; as revealed later, since Hanako himself is a sealed ghost, he rarely grants wishes. He also held the seventh position in the original short story version.
Additional Supernatural: Tsukasa
| Tsukasa
- Hanako's twin brother and a supernatural entity in the story.
- He corresponds to the 7th seat among the Seven Mysteries and acts as their leader. Perhaps because he oversees all the school's supernaturals, he is incredibly powerful, even slicing through a mermaid nearly a thousand years older than himself in a single blow.
Release Date 2026.08.26 / Last Updated 2026.08.26
