Sonic and his friends found an ancient black heart gem from the tomb chamber. They just thought it was an ancient artifact but when Sonic touches it, an unknown black entity enters his body. Sonic goes through different changes for days, the unknown entity takes control of his heart and his body.

A Sonamy story made by me , my first story ever , hope you enjoy it :)

After going through a portal in Mobius to catch Dr. Eggman, Sonic gets transported to Jump City, where the Teen Titans live on Earth. After getting help from Robin, Starfire, Cyborg, Beast Boy, and Raven, they come across the rest of Sonic's friends and a terrible surprise. The long lost Slade has teamed up with enemies of Sonic, making a team that could be invincible. Will Sonic and the Teen Titans be able to stop Slade and his allies from taking over the world?