Yesterday Today Tomorrow 2: Black Hearts

Ten years have gone by since the first Lightning, and the victims who are still living in hiding or in isolation from the rest of the world, are prosecuted by civilization who outnumber them, they are the outsiders the interlopers, some of them gave birth to strange humanoids, dark humanoids known as the Black Hearts, their birthing parents die in the process while their Guardians who cannot bear children become the White Hearts and mentors for the Black Hearts, teaching these half humans half aliens how to coexist on earth, they grow up fast, and in ten years they are twenty years old, tall slim with striking features, they are devoted to their Guardians but the rest of the world is not ready for them, and they will hunt the Black Heats down until there isn't one left. Only Time can save them...either Yesterday Today or Tomorrow.