On an isolated island between the seventh and eighth continents, there is a bottomless pit called "The Fall" with seventeen levels, each with its own independent world, created by the "Origin Witches".

Another branch are the Executioners, a clandestine group dedicated to killing witches, regardless of their innocence, and resorting to violent means to achieve their goals.

Despite looking completely human, witches are considered a separate species and have a lifespan of 200 years, keeping their youthful beauty upon reaching adulthood.

For mages, the amount of magic force they have varies and depleting their reserves or damaging their fingers is one way to combat them.

A powerful and independent organization, the Order of Magical Resonance, is made up of mages, witches, and other supernatural beings that deals with magic-related issues.

The Order has a tentative relationship with the church, as the two factions tend to clash due to their respective agendas, though both groups have an unofficial agreement to never go to war with each other.

Due to unknown reasons, Forbidden Instruments, dark magical tools that grant the wielders immense power at the cost of blood sacrifices, are being spread around the world.

At the core of it, Angela and a coven of witches and mages are prophesized to become a "great enemy" to society, causing the Order and the church to scramble to stop them.

[38] Yūichirō Momose is writing the scripts, Hiroya Iijima handling the character designs, and Hanae Nakamura and Natsumi Tabuchi composing the music.

[43] As part of Anime News Network's Fall 2021 manga guide, Rebecca Silverman and Caitlin Moore reviewed the first volume for the website.

[2] Contrary to other critics, Che Gilson from Otaku USA praised the plot and setting in addition to the artwork.