VentosRaingon
Silver the hedgehog returns to his future after the events of Sonic Forces, but things seem a little off. After finding himself in Soleanna, he can't help but feel like he was there before. Soon after, he starts having flashbacks to another time he knew never happened, but he knows deep down that he was there...
After crossing paths with a mysterious green hedgehog named Freesia on a seemingly unrelated mission of her own, the two team up to figure out both mysteries unfolding. Little do they know the mysteries intertwine in ways both unexpected and dangerous as they uncover the truth of Silver's past, Shadow's fate, and a mysterious dark presence that seems to be stalking them at every turn...
Also available on Ao3
Cover Art by Night Hedgie
This fanfic will also contain many Easter Eggs for veteran Sonic fans, though casual fans should be able to enjoy the plot just fine.