After sleeping for 800 years, a vampire noble, Kadis Etrama di Legero, was awakened by an organization called UNION. After many years, he came to modern human society and lived the ordinary life he longed for for the first time. However, troubles came one after another, so he had to fight with those who wanted to settle accounts with him. The final ending ended with Lai and Muzaka's death and resurrection for unknown reasons.