Aluno is a wizard. He's been living on earth for more than 500 years. He transfers into human's body to earn power, manipulate people, and do a living. He cant die easily because of that. But he fakes the death of the body he used. He transfers his spirit so he can fit to the society and adjust to the year he lives.
No one knows about his power. He had sons and daughters in every generation. But unlike him, they cant be an immortal because they have a blood of mortality in them.
But then because of the Zodiac Prophecy. He greeds for so much power.