In a world where humans and vampire with beauty but filthy, love but also hate, loyalty and betrayal exist, among them there is a boy named Koichi. He has only one goal - to kill every single one who destroyed his village, murdered his parents and his beloved twin brother. Eventhough he still suffers from the past trauma, pain and anxiety he is only fixed to get revenge. But will he be able to fulfill his goal, be free and satisfied with his decisions? Because what he is going to face changes not only his future but his view to the past too.