Shadow was always deeply in love with Sonic, but after being rejecting by Sonic and finding out he was in love with Silver, broke Shadow apart. Shadow was then greeted by a mysterious ghost figure, and was promised a serum that could control one person. Shadow obused this power, turning the Hero Sonic into a Monster of his. This story contains 16+ themes, like swearing, murder, romance, sexual content, etc. Character, belong to Sega, not me. This is just a fanfic. Please don't sue me!!!