Nishimura Riki is the youngest of the seven supreme vampires. Unlike his older brothers, Riki is more attracted to the human world, than the vampire world, which is why he often gets into trouble. He has 6 brothers — Jungwon, Sunoo, Sunghoon, Jake, Jay and the oldest — Heeseung. All seven are the oldest vampires from the highest class. Although Riki is more than 500 years old, he is considered young, so his brothers always help him. All seven were friendly, always helping and caring each other.