Sonic's(Eggman-Free) Birthday Party

Sonic's whole crew has been on edge since Eggman's disappearance 1 year ago. Even worse, most of them haven't seen each other or talked since the villain went missing. So what happens when Sonic's 16th birthday comes around? This story includes angst, fluff, a(probably) predictable plot twist, an asteroid, and a late birthday cake. Enjoy! Also, this story has no smut :D