Blood Stain Child, then called Visionquest, was formed in 1999 by Ryo, Ryu, Daiki, Aki and Violator. In 2000, they took on their current name and recorded their first three-track-demo in August 2000. The band sent that demo to a radio station and the DJ enjoyed the music so much that he recommended the band to the record label, M&I Company, who eventually signed Blood Stain Child. In 2001, Blood Stain Child recorded two songs, "The World" and "Steel Flame". The first song was used as the theme song for professional wrestler, Kensuke Sasaki and the second song was used as the theme song for the 30th anniversary of New Japan Pro Wrestling, a professional wrestling group. In July 2002, Blood Stain released their debut studio album, Silence of Northern Hell. In October 2002, Blood Stain Child was the supporting act for Dream Evil during their tour in Japan. In June 2003, Blood Stain Child released their second studio album, Mystic Your Heart, which was co-produced by Anssi Kippo, a popular producer from Finland. In March 2005, Daiki left the band and was replaced by Shiromasa in April. That same year, Blood Stain Child released their third studio album, Idolator, which was co-produced by Tue Madsen, a popular producer from Denmark. In 2006, Blood Stain Child signed with Dockyard 1 and released Idolator in Europe on November 27, 2006. Idolator was later released in the United States through Locomotive Records on July 17, 2007. In April 2007, Blood Stain Child announced the addition of a new vocalist, Sadew, and a new guitarist, G.S.R. On July 18, 2007, Blood Stain Child released their fourth studio album, Mozaiq in Japan, which was also co-produced by Tue Madsen. It was then released in Europe on July 20, 2007 with an exclusive bonus track "Cosmic Highway". On June 12, 2010, Ryu announced on his official blog that Sadew withdrew from the band due to personal reasons. Drummer Violator left the band as well, in order to take care of family business. In September the band announced new members on vocals and Gami on drums, signing a contract with Italian record label Coroner Records and Japanese record label Pony Canyon. In April 2011, Blood Stain Child took part in a Studio Ghibli cover album titled Imaginary Flying Machines - Princess Ghibli, covering the songs "Itsumo Nando Demo" and "Teru no Uta". On June 2011, the band performed at A-Kon in Dallas, Texas, together with D. Later that same month, the band released their 5th full studio album, Epsilon. The band started a Japanese tour from August 19 to September 24. In December 2011, the band performed in Moscow, St. Petersburg, Ekaterinburg and Kiev. Blood Stain Child performed as special guests at Naka-Kon 2012, in Overland Park, Kansas, between the 10–12 February. In March 2012, the band took part in another Princess Ghibli album, covering the song "Ai wa Hana Kimi wa Sonotane". On July 21, Sophia officially announced that she was leaving Blood Stain Child. She later formed the electronic metal band Season of Ghosts in 2013. New female vocalist Kiki joined the band on December 3. In early 2013 the band introduced their new VJ/DJ - Makoto, which came along with an announcement of Aki being absent from further live shows due to "his personal issues", however, he will remain a member and take part in the creation of music. However, Makoto left in 2014. Founding member Ryo and Kiki both left Blood Stain Child in 2016. They were replaced by bassist Yakky and male vocalist Saika, respectively. In 2018, Blood Stain Child joined forces with Danceroid-singer Yuzuki and created the melodic death metal supergroup Yuzukingdom. On February 1, 2019, Blood Stain Child released a new single, entitled "Del-Sol" as well as an accompanying music video. Later that year, on July 3, a new full length album called Amateras was released featuring the same members as the previous single.
