Sonic Frontiers Prologue: Divergence (ソニックフロンティア プロローグ) is a 2D animated short intended to serve as a prequel to Sonic Frontiers.
Synopsis
For as long as he can remember, Knuckles has preferred to operate on his own. As the guardian of the Master Emerald, he knows every corner of his island and every secret it holds…or so he thought. A sudden discovery is about to turn his world upside down.
