The band was formed when members Kiwamu and Kaede recruited Dai and Taichi to their duo project.

With new vocalist Fu-ki's entry into the band, Blood began to move their music in a more hard rock direction.

In the winter of 2004, they released "Vengeance for Blood" and began their worldwide tour, starting in Europe.

[5] The following month (March 2006), they did their last tour with the vampire concept though Europe and a special live event in Japan.

They continued in the hard rock direction and started a new concept based on the poetry of French poet, Charles Baudelaire.

EP "Dead-Hearted" was released September 9, 2007 and is the first of their works in the Symphony of Chaos concept, the track 'Blood' being a cover of a previous era and also includes Exo-Chika of Aural Vampire as a guest vocalist.

In September 2007, Kiwamu joined GPKISM headed by GPK (Gothique Prince Ken) of Australia as the guitarist.

The band recruited Ryonai (Blam Honey) on live keyboards and have released 1 album and 1 single, gaining them some notoriety.

Blood officially returned in 2011 with new members Hayato (vocalist), Kazuha (guitar), Dora (drums), and Azami (bass, of Misaruka), releasing the singles "Bathory" in June and Elizabeth in October.

The band performed a North American tour in November, stopping at Dotcon in Toronto, Boston, NYC, Pennsylvania, and at Anime USA with the main act Matenrou Opera.