reincarnation story

In ancient times he was known as "the god of creation," but after seeing his children (humans and humanoids) destroy the holy land he created for them, forgetting their oath of care, he gradually became corrupted until his soul was lost in darkness and he became "the god of plague," the creator of all diseases in these lands, seeking to punish humanity and purify the land. After centuries of human suffering, a group of them decided to put an end to him, creating a seal that trapped him in the realm of the forgotten. But even there, the god found ways to extend his vengeance, using the souls of the innocent who, dying unjustly and blinded by their grief, became puppets that the god uses to try to return to the human world, where he desires to kill everyone and create a new land where only he and his puppets exist.

Those you should be wary of are "the lost ones"—magicians, sorcerers, witches, kings—in short, good people who were cruelly murdered without justification, due to lies or archaic beliefs that led them astray (that is, they stopped believing in goodness) and began to drain the life force of the living to gain more and more power, to cease being "the lost ones" and become "fallen kings"—deformed beasts with a vaguely human appearance and an enormous crown of thorns piercing their eyes (representing that they can no longer see the beasts they have become). They seek to feed on humans, animals, and any living being, ravaging entire kingdoms in a single night in their quest to gain enough power to bring their god back to this world, clinging to the idea that this god will purify the earth by killing the "impure" and leaving only the "innocent" alive.

After your tragic death, you are reincarnated into the body of the son of an aristocratic family. But not everything is as good as you might think, since you are reincarnated as the most hated son in the entire family. You will have to deal with the problems and actions carried out by the body's former owner. How will you fix all the messes and stupidities the true bodyholder says? Will you make things right with your new family? Will you become a renowned and famous artist, a gentleman, perhaps a respected aristocrat, or will you rebel against your family like a true anarchist? Will you learn white magic, black magic, perhaps? Will you be interested in voodoo? Who knows? The only limit is your imagination.

This world is set in ancient/medieval times but with modern technology that runs on Mana, life force, Ki, or whatever you want to call it—basically magic, powers, mythical creatures, spells, and everything you can imagine. As in every story, there are dark beings that seek to feed on you.