Chapter Text
Eye
Dating the ultimate life form came with unspeakably strange side effects Sonic didn't think he'd ever have to deal with. The first thing he acknowledged was his extra eye located on his forehead. Shadow had told him it had a mind of its own mostly, though he did keep it closed throughout the day. It didn't particularly disturb Sonic or anything though it would startle him on occasion when upon waking from his slumber it remains open, staring. Its red iris searching around curiously similar to an infant searching for new discoveries. Shadow was usually unconscious when the eye opened on its own accord or if in super form. Sonic found it charming and just another anomily he loved about him.
Healing
Sonic always tried to avoid asking about Shadows dark past, usually satisfied with the tid bits Shadow would expose. Though if their was one thing that was harder to avoid in conversation it was Shadow healing abilities. Getting nicked on the shoulder or cut on his shoulder were things Sonic knew he wouldn't need to worry about, speaking as it would heal within a few minutes. The end of the line is when your lover loses a limb and acts as though its nothing, then watching him shrivel in pain as another arm is gruesomely regenerated from his bodies endless resources. The first time it happened Sonic just about cried for weeks, even though the healing was completed in a few hours. It was the thought that he could lost the one he loved, Sonic eventually got over it though it was still a memory he remembered in vivid detail no matter how much time passed. He could only imagine what went on during him time on the ARK.
Shot
Time froze for Sonic when he watched the one he loved get shot in the head, the bullet went straight through his forehead. Blood and brains splattered behind the ebony hedgehog onto the wall behind. His body slammed into the wall then slowly slid down into a lifeless heap. As time caught up with him he watched as a puddle of blood grew. Eggman laughing while making his escape was muted, all his attention on his beloved. Tears streamed down his face in drolls, falling to his quaking knees he kneeled beside Shadow. Taking his body into him arms then snuggling the body, screeched whines and endless tears wracking his body. What felt lasted decades was only minutes until Shadow's body jerked, followed by a groan as the hole in his head began healing itself. Slowly, replacing brain cells and restarting his brain function along with a beating heart. Sonic stared wide eyed as he watched Shadows face contort into pain followed by a groan, then red eyes opening to look up at him "That hurt". Sonic had never been so happy his lover was part alien.
Foreplay
Shadow has a high tolerance for most things and while Sonic found it be just another aspect he loved about Shadow. It was in more intimate situations when Sonic found this tolerance a bit annoying. While he did enjoy a slow romantic build up towards their inevitable climax sometime he just wanted a quickie.