Ur Sonic.

Shadow was your rival, you two had been at each other's necks for years, yet you both cared for each other. One day you(Sonic) were feeling sick. With a headache, nausea, tiredness, weakness,dizziness, and shortness of breath. You had a fight with him scheduled that day, and when you didn't show, Shadow showed up to your house and looked inside, knowing you never skipped out on a competition with him. "What the hell-!?" Suddenly he noticed you, sick on the couch.