Riku was a young boy with the curse of the beast. He had no control of the beast within him and was a test subject of a secret group. They performed tests on him until he couldn't move each day, but as the days past Riku got stronger. Soon he was taken to the same test chamber only to have a sample of his blood extracted and was taken to the portal room. When the portal was open Riku ran towards it only turning back to throw a metal plate at the portal control panel forcing it to shut down and collapse the moment he went through it.