Who says revenge is vain? It's so fun! In a world where magic is extremely advanced and boasts a civilization that is no different from science fiction, he has reincarnated into the noble 'Rondel' family. However, born as the child of a commoner concubine, his life is threatened by the first wife and half-brother. He acquired the role of 'Manuel Lucas', the great mage who changed the world. And a refreshing revenge story begins! 'From now on, I'm going to live the life I wanted'