In this world, You can live off of fake blood, that is how most unpaired vampires live, because once you drink from a human's blood, that is the person that you must drink from for the rest of your life. Now, vampires are not immortal as the myths always promise, but they are very hard to kill, the only easy way for a vampire to die, is if they drink from someone else's blood when they have already drank from a human. Rain's case, however, is different. His body seems to be rejecting artificial blood. So, will Rain settle down with someone? Or will he continue to suffer?