Based on the original manga by Yasuko Aoike. Follows the adventures of Dorian Red Gloria, Earl of Gloria, an openly gay English lord who is also an art thief known as "Eroica".
The three brothers discover that the human experiment banned after destroying the "Orochi", is still going on to secretly revive the evil snake. They also find out that some ex-members of the Yamainu (the Japanese military unit formed to kill the snake) are behind this conspiracy. The brothers fight together again in a battle against the military.
One year has passed after the great battle against the Orochi (gigantic snake). Tenka Kumo had been paralyzed from the final battle and he took part of the government’s human experiment before the battle. Tenka withdrew himself from society but his younger brothers Soramaru and Chutaro find out the secret past about their older brother.
After the massacre in Ukishima, Saya loses her memory and wanders the slums until she meets Haru, an unlicensed doctor, and Ran, the girl who hunts the Elder Bairns. As her memory returns, she discovers that she had relationships with them both in the past, and secret promises made by the Nanahara clan and her nemesis, Fumito. As Sayo tries to rescue kidnapped Haru, she encounters Fumito again. This feature untold story in the time period between the 2011, 12-episode TV anime created by Production I.G and Nanase Ohkawa (CLAMP), and its feature film sequel Blood-C: The Last Dark in 2012.
As an unexpected typhoon bears down on a small tropical island, a group of students trapped at school find themselves forced to put aside their personal issues and work together. Not only to save themselves, but possibly the lives of everyone on the planet!