"It cant get any weirder can it?". Thats what our main heroine wished what would happen but in true story fashion it will get crazier but lets go back to the beginning shall we?
It was a beautiful day in Youkai acadamy a school for monsters in a sealed barrier to keep humans out of their world. This was the way of the world and no one had changed it until... A human boy entered the school on a bus since some creepy dude dropped document for the school named Tsukune Aono but he ain't important. In the first year he made friends with a pink haired girl with a dark secret and they talked (and after she sucked his blood) they began to be best friends and after many adventures they met other girls and surprise surprise they wanted Tsukune for themselves which began the "he's mine business".
But this peace came with a price that inside Moka (the pink haired girl) she had a inner form with white hair, blazing red eyes and a bad attitude to boot. Everytime Tsukune was in trouble he would release her to fight his battles for him. After a few years Moka had to save his life by injecting her blood into him and turning him into a level E class vampire but he wouldnt be like every other level E since he got blood from the S class monster.
A few years past and they are all somophores and a magician has entered for the opening ceremony...
The plot unfolds