In 436 AD, Theodosius II sent an army to the Balkans.
Until the emergence of the Byzantine Empire, none of the ten of them survived.
In the hundreds of years since then, vampires have gradually expanded. Finally, in 2350, they completely occupied the human-dominated area.
As a treasure of human secrets, Xu Nuo has been studying the secret of vampire immortality. So she disguised herself and entered the vampire Campbell's area.
After meeting Afrena, she began to waver.
However, the status of human beings is unshakable.
She imprisoned Afrena in the "Last Light" with her own hands.
From then on, human beings became immortal.
The article is purely fictional and a mess of unbelievable history (but the time and so on are no problem...)
Purpose: Friendship comes first