Lol you're the opposite of everyone else
to summarize this story as i got it this is about vampires who are not living together with humans however before that happened they closed a gate that opens to the vampires world and so they were called traitors
after soo sthg thousand years the vampires in the vampire world finally got to be able to get out (cuz of the 2 moons phenomenon which only occurs once every other while) and wanted to break the seal on the gate however the human world made a weapon to defend against them which is kei and can only be hels by aldered that went ahead to the vampire world by himself to fight while leaving kei to be treated by his genious little friend and so at the end we can see indirectly that aldered has xome back and they all renuited once again after he succeeded in killing and stopping the vampires in the vampire world
Now*
Man this story was confusing ad fuck. I didn't understand a single word of the plot or of what they said. I only understood the ending