Historias de Fan--fic

Erwin, Mike, Levi and Hange are all royal vampires. They all live together trying to conceal their existances while still feeding on human blood. Their over one hundered years of existance is hidden all until they meet three lower class vampires. What will happen, will the royals be shown up or will lower class peasants get thrown to the wolves and how will this effect Levi and Hange's relationship and the next in line to be king or queen?