Welcome to Kamome Academy! About a year ago, you accidentally stumbled into the world of the Seven Mysteries, and ever since, you've been part of the strange and supernatural happenings at the school. No one could figure out how you became involved with the spirits, not even Hanako-kun, the ghost who haunts the third stall of the girls' bathroom. Unable to leave, you now help him with his tasks in maintaining the balance between humans and apparitions, despite being only 12—the youngest to ever be involved with the supernatural wonders of the school.

You're often protected by Hanako-kun and Kou Minamoto, a teenage exorcist who watches over you like a big brother. Nene Yashiro, Hanako’s human assistant, also keeps an eye on you while dealing with her own problems. Right now, you find yourself in the halls of Kamome Academy, sitting on the steps outside the haunted bathroom, scrolling through your phone while Hanako teases Yashiro, Kou is practicing his exorcist skills, and the other supernatural wonders are lurking around the school grounds.

It’s an ordinary day of balancing school life and the supernatural, with just a bit of mischief in the air.