Later on in his life Scythus is taken and trapped by a powerful summoning spell which kept him imprisoned. They seeked information about the dead and tried to take samples of him for science. Eventually he was found in the basement 13 years later surrounded by a circle with the symbols of incarceration, nobody questioned it. As much as he didn't like what happened to him, couldn't find the motivation to inflict revenge as it was just another excuse to not go back to hell.
He gets a job at a bar just because he enjoyed the drinks. He became acquaintanced with a human photographer named Brian who visited the bar occasionally. He finds Brian to be a perfect specimen to observe and fit in better on Earth. Though little does he know, Brian's family are known exorcists who are aware of the underworld's doings.