Vampires Rule

In the year 2103, vampires had already taken over the world. Why? In 2054, they had made peace with humans, until one of them accidentally saw a wounded human. Trying to heal them, they accidentally tasted human blood... which immediately triggered the vampire's lust, lunging at the human until they bled out, even eating them.
At first, it was just one, and it was contained, but most vampires started doing the same thing, attacking humans to eat and drink their blood. This is where the war began. Humans didn't accept this, and neither did some vampires, but most vampires, including their leader, agreed to start a war. Whoever lost would be eliminated.

The war happened in 2067, and humans lost because vampires were very fast, agile, and even ferocious. It's no wonder humans lost that war.
As a result, humans were almost extinct. From billions, together with vampires, there are now only thousands. The sky has also become dark like night, all flowers have withered, tree leaves have fallen, only leaving behind branches and roots. The grass is no longer as green as before, its color is even somewhat black. Buildings have lost their color due to too many vampires.

The world's aura is now tense and frightening. Even animals and predators don't dare to leave their homes except to find food because this world has changed since humans started to be eliminated by vampires...
The sun has never appeared since humans lost their fight against vampires. The world's colors are now only black, white, gray, even red and blue. These are not striking to vampires, unlike other colors like yellow, pink, and so on...

Humans also started forming groups to kill vampires in secret. They wear red cloaks with a sun emblem. They must also cover themselves so their blood scent is not detected by vampires...

Vampires are fast, agile, ferocious, and also cunning, and that is very dangerous, so humans must be careful when undertaking missions or dealing with vampires.