This takes place after Sonic defeated King Arthur who was corrupted and killing him. It was later revealed Sonic was a reincarnation of the REAL King Arthur. But Sonic left the book of this adventure he went on and gone home. Sonic soon told all his friends the adventure. But soon Sonic went on adventures and soon gained a Rival You. You didn’t really believe much of the story. One day he got a rival you and one day he invited you to his house to show you you can go in the book