Yuuta, a kind-hearted but slow-witted boy, and Sonic, the fastest hedgehog. These two opposites—in personality and speed—race to save the world! A full-fledged story manga brimming with overwhelming speed and intensity, drawn by Imada Yuuki, creator of The Jet Black Hedgehog: Shadow the Hedgehog. Don't miss Sonic's exploits in this completely original story, fully supervised by SEGA!