The Seven School Mysteries (学校の七不思議 Gakkō-no-Nanafushigi) are the wonders that can be found at each school. These are usually yōkai playing pranks on humans.
- Main article: Design Statue
The first of the Seven School Mysteries, within the art room, is a design statue that cries blood. The weeping statute appears as a bust of a male figure with curly hair, under its eyes are blood trails from its crying. It along with the other seven mysteries were captured by Yōsuke and were hung up in the gymnasium. After Yōsuke was defeated, it is rescued and returns back to the art room.
- Main article: Anatomical Model
The second of the Seven School Mysteries is the laughing anatomical model. The Anatomical Model appears as a model of the human body, one-half of its body is the outer features, such as skin hair and other facial features, the other half and chest area are the innards of the body, such as the organs and muscle tissues. It along with the other seven mysteries were captured by Yōsuke and were hung up in the gymnasium. After Yōsuke was defeated, it is rescued and returns back to the science laboratory.
Kinjirō Ninomiya Statue
- Main article: Kinjirō Ninomiya Statue
The third mystery of the school is the running statue of Kinjirō Ninomiya. Kinjirō Ninomiya is modeled after a man dressed in a short kimono and hakama, he carries around firewood while reading a book. He is a friend of Sunakake-Babaa, Konaki-Jijii, Ittan-Momen, Nurikabe, and the others, when he wasn't responding to their messages from a month ago, so they suspect something had happened to him. Later it is revealed that he along with the other seven mysteries were captured by Yōsuke, and were hung up in the gymnasium. After Yōsuke was defeated, he is rescued and returns back to his post.
- Main article: Jinmenken
The fourth of the Seven School Mysteries, the Jinmenken that lives in the connecting corridor. He resembles a small dog with a gray fur coat but has the face of a man with a mustache. He along with the other seven mysteries were captured by Yōsuke and were hung up in the gymnasium. After Yōsuke was defeated, he is rescued and returns back to his corridor.
- Main article: Beethoven Portrait
The fifth mystery of the school is the portrait of Beethoven that comes out and plays the piano. He resembles the actual Beethoven, with long gray hair, wearing a black open tail coat, yellow waistcoat, white bowtie, and gray pantaloons. He along with the other seven mysteries are captured by Yōsuke and were hung up in the gymnasium. After Yōsuke was defeated, he is rescued and returns back to his piano room.
- Main article: Hanako-san
The sixth of the Seven School Mysteries is Hanako-san who lives in the third-floor girl's bathroom. Hanako is a friend of Neko-Musume, and her bathroom stall is visited by her and Mana when strange things start to happen around Mana, however, they get no response.
- Main article: Yōsuke-kun
The seventh and final mystery of the school is Yōsuke-kun who lives in the second-floor boy's bathroom. Yōsuke had a crush on Hanako and has stalked her, in addition to being the yōkai responsible for the disappearance of the other Seven School Mysteries at Mana's school.
- Main article: Nurikabe
After Yōsuke-kun was defeated by Neko-Musume, Nurikabe became one of the Seven School Mysteries due to his infatuation with Mana. He is seen watching over Mana on her classroom's ceiling as the others explain his recent whereabouts.
The Seven School Mysteries are common urban legends around Japanese schools. Usually a set of seven unrelated mysteries with the seventh being mysterious. Common themes include the living anatomical model, the Ninomiya statue moving, bathroom ghosts, staircases with more steps going up than coming down, and other variously spooky and paranormal things.
|Tribes and Clans||Amami Tribe • Ghost Tribe • Hi Clan • Kidōshū • Mu Empire|
|Jigoku||13 Kings of the Underworld • Eight Shinigami • Four Treasonous Generals|
|Japanese Yōkai Groups||47 Yōkai Warriors • 808 Tanuki • Azuki Allied Force • Flame Yōkai Five • Kitarō Family • Nurarihyon's Faction • Seven School Mysteries • Shichinin Misaki • Tengu Police • Yōkai Seven Mysteries|
|Western Yōkai Groups||Western Yōkai Army • Western Yōkai Three|
|Other Yōkai Groups||Ancient Gods • South Asian Yōkai Five • Zodiacs|
|Other Groups||Daidara Order • The Batteries|