Manager/Eve

"We humans have weak hearts. It only takes one crack and we are gone. I am no different but... If I could, I'd like to part with something bigger to me... I want to give the world a gift, to show their true nature before I leave! They deserve it... and need it."

The Start - A Dream
Eve is an elusive character in the story of the Dark Side, only really appearing physically as a full nervous system in the birth of Erdtree, the Manager. Nowadays, she shares a counciousness with the great Caelum tree and mayhaps, vestigially, with the vessel that houses them both. It is foretold that she was a selfless soul that died young in an coordinate attack by the Head to the L Wing as they were attempting to create a way to apease tensions in the city and calm crime down, something that the Head did not take fondly to. Eve was a casualty that day, along with Malkuth, her body was burnt to a crisp in the incoming onslaught of the Claws, and the burning of their old, secretive lab in which she worked on this majestic plan for a better future.

It is presumed that she was Ciel's mother, and that even post distortion she wandered around the sump with their hands united. It is also suspected that Eve was on a very poor state when they were found with Ciel by Ace