Akiii_2121
This is an alternate universe where Sonic isn't the hero, he's just a normal student at Green Hill High School. Instead, the world's fastest hero is someone known as Striker.
Meet Striker: the fastest being alive and the famous hero who has saved the world multiple times from the evil genius scientist, Dr. Eggman. However, Striker never reveals his true identity. Wearing a mask and a cloak, he keeps his existence as low-profile as possible. But Striker isn't the only one watching over the city.
On the other hand, the blue hedgehog, despite being named "Sonic", isn't fast at all. Unlike Striker, he is "weak" and "unable" to run quickly.
Or at least, that's what everyone believes.