Three centuries ago, a lone mage spread a curse throughout the world—a curse that caused the dead to rise from their graves and bite the living, turning them into victims as well. Unlike ordinary undead, these victims retained their consciousness. The idea that their transformation had given them eternal life and happiness was ingrained into them.
As a result, these undead attacked the living in an attempt to spread the blessing. Just as it seemed the undead would flood the world, humanity developed a barrier and successfully contained the outbreak to twelve locations. The locations where the undead had been sealed came to be known as Forbidden Cities.
I was one of those undead sealed inside a Forbidden City. I killed all the other undead in my city, then lived on in solitude until a girl appeared from outside the barrier. Three hundred years had passed on the outside, and now, combatant holy knights formed tag teams with holy women who supported them so they could bring salvation to the undead.
The girl was a descendant of the witch who had started it all. There was no one who would become her holy knight—except for me. In order to kill the witch, I took Astrantia’s hand and chose to regain my flesh for the first time in three centuries.