Chapter 1: Violet Rings Arounds her eyes

If Willow hadn't shown up on Marshall's door and if his father never became her guardian, then Marshall would have become a UNAR Scientist. But, all that changes, thanks to an incident at school involving Willow. After that Marshall carefully constructed world fall apart. He has nothing left but a lying father and a feral girl.
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Basically: Little shop of horrors mixed with Tarzan meets Sci-FY