No longer dwelling on those distant matters, Anvis closed the "Things Trapped in the Black Mirror" he held, slowly rising from the pearlwood long table of the Great Library.
As the book closed, his face was darkly reflected in the pitch-black circular mirror that took up nine-tenths of the cover, looking quite strange.
This was a Fourth Rank Magic Book that documented various terrifying entities existing within the pitch-black mirror surface, allowing readers to understand their habits.
The author of the book had once proudly claimed: 'Everything recorded in the book is guaranteed to be true and reliable.'
To prove the authenticity of the book's contents, he captured every kind of terrifying entity described in the text and placed them all into the black mirror on the book's cover.
It is worth mentioning that there were no protective measures for the reader on the mirror surface.