Legend of Duo
Genres: Boys Love, Drama, Supernatural
Type: TV, Episodes: 12
Aired: Oct 27, 2004 to Dec 1, 2005
Studio: Radix, Marine Entertainment
Source: Original
Rating: R - 17+ (violence & profanity)
Synopsis:
It is the early 21st century, and mankind is doomed. Due to a mysterious virus that steals the essence of human life, humanity has been pushed to the brink of extinction with only one hope for salvation: the blood of a vampire. Vampires have closely guarded the key to curing the virus for several years, which has led to an immense rift between them and humans and the world's descension into chaos.

A vampire named Duo, having leaked the secret to saving humanity, is now considered a traitor to his race, and the powerful vampire Zieg is on his trail. However, due to Zieg's sense of duty, his heart is torn: should he kill the man who betrayed his people, or will his personal history with Duo sway him to have a change of heart?