I gave it a read, and it’s pretty good along with some of the humor. I never watched Fate, so I was practically going in blind. But I played a couple Sonic games and watched the movies and shows, so I’m familiar with that. My only criticism is having Sonic as y/n. Me personally, I would prefer it to just be Sonic instead of the reader. There’s already enough y/n fanfics around here on wattpad. Other than that, your fanfic seems promising and has good potential. Keep it up!