Forest of Ainnash

The Forest of Einnashe, known as the "Disemboweling Sea of Trees" and the "Demon of Schwartzwald", is an eight hundred year-old sentient forest that ranks seventh out of The Twenty Seven Dead Apostle Ancestors. The attributes of the forest were initially thought to be due to a long lasting Reality Marble of the previous number seven, Einnashe (アイナッシェ), who was a mage who willingly transformed himself into a vampire. He was a specialist in hypnotism able to use "memory remodeling" to remodel the memories of everyone he encountered, including Arcueid Brunestud, with such precision to make them entirely forget his existence. The suggestions worked on the basis of "understanding", so Len's master was able to dive into Arcueid's subconscious to make the order impossible to recall, allowing the information on Einnashe to resurface. Arcueid killed Einnashe and carelessly left his body under a bloodsucking tree, which absorbed the Dead Apostle's blood over time and transformed the entire forest into a Phantasm Race.

It is a black forest, best described as an alien world shrouded by darkness even in daylight, fifty kilometers in diameter. It has transformed into a massive predatory being with a mind and will, causing it to "move" over entire areas and towns, and absorb all the blood from the creatures and people within the area. It hibernates for decades, generally manifesting once every fifty years to absorb hundreds of victims, and it is constantly sprouting entirely new areas of forest. Anything unfortunate enough to find itself inside it is collectively attacked by the trees and plants, acting like free-form weapons, from all angles, and even something as large as Merem Solomon's two hundred meter Demon of the Right Leg is completely swarmed and covered within a minute. The air can also become poisonous to cut off all escape those who enter, so all who have been caught have never survived. It is said that a single red fruit growing on a large tree within the forest's center can grant a person temporary immortality having become the essence of the harvested blood of its victims and the thousands of animals that once inhabited the forest. This acts as a light trap that has drawn a countless number of people into the forest who never return.

The blood from its victims flows through the forest, causing trees and other vegetation to be dyed with a dark-red coloration resembling an animal's innards. The roots and trees secrete blood as if it were sap, and the forest constantly growls like a bloodthirsty beast. Being classified in the top ten ranks of the Ancestors, it is the entire forest is a living being unable to be killed by normal concepts, and its core is impossible to find due to the constant movement of the forest. The forest, as a phantasm race, feeds off the natural environmental prana, making it nearly impossible for magecraft and similar abilities to be used within its confines. The Church's efforts to eliminate it during its manifestations have been in vain, causing them to start sending dozens of their first class monks and exorcists only out of dignity. They are not even able to last a single night before being eliminated after only destroying a small area. It is attacked by Ciel, Merem, and Satsujinki, in Talk., instinctively becoming aware of Satsujinki's ability to kill it as he reaches its core.