The titles of the works are "Strange Murder", "The End of the World", "Ghost Story Game"...
In this world where technology is not yet developed, two serial murderers appear.
One of them is a blood butterfly and the other is a red rose. They started to investigate the case frantically.
And they began to take crazy revenge...
But what they don't know is that the biggest disaster is not the murderer, but a doomsday, natural disaster, zombies... People start fighting in various ways to survive.
