My Deer Slenderman

Dispite being annoyed and harassed daily by the murderous undead children living in the plane of existence that is his mansion in Slender forest... Slenderman often does crave companionship. And, while his children do help to fill the void somewhat, he knows it would only be so long before they're gone. Or before they tire of him and go off on their own again.

Slenderman wished for a more... permanent relationship. Ideally, an immortal companion similar to himself, someone other than his barely bearable brothers.

When Slenderman leaves the mansion to find a guest living in his old cabin on the mortal plane amongst the humans, is fate finally on his side?
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(Y/N) has sadly long learned to live with loneliness as she lived millennia after millennia. Her last memories as a human ended, and her first memories as the Deer Woman started in the late 1500s as she and her whole tribe were killed. By plague? Colonization? An enemy tribe? She could not remember, nor had she wanted to remember.

Finished with her latest hunt, (Y/N) had gone to sleep in the cabin she called home the last 8 years before waking up to find a visitor hiding in the shadows. Would she run, or fight? What did they want?