The source of life and the bearer of memory is blood
Thirteen alchemists used the blood of Abel the Martyr before the Continental Era began. They achieved "immortality" by using it to unlock the ability to transfer memories through blood, giving rise to the first Bloodborn. The Black Blood illness spread like a relentless torrent throughout the continent in the fall of 1353, more than a thousand years later. A young guy from a tiny hamlet named Noah was condemned to burn at the stake for his ailment after being labeled a heretic. However, a Bloodborn female emerged as the flames drew closer, instantly breaking his destiny.