phenomen a book

Having led all his life in the belief that he was a villain, Zareph is more than disappointed when the heros party didn`t manage to beat him after sieging his fortress. Enraged and deprived of a goal in life he enslaves the hero and continues to rule his world until the day where he couldn`t stand the boredom and decides to go to another world. On a whim he decides to take the hero with him and so the tales of a villain (?) starts ...