blindsheep was formed in January 2008 by Keiji and Soji.
The two performed together in CHAINVULGAR until mid 2006, and after the band broke up, went on to their own separate projects.
When Keiji's band broke up at the end of 2007, he decided to start work on his visualized band concept. He called upon Soji, and once again they started performing together, this time as blindsheep.
(Soji was at that time, and still to this day, part of AMUZA.)
At first, blindsheep's sound had a strong focus on Metal and Heavy Rock, but gradually started to include elements of Trance and Ambient music in the pursuit of a uniquely individual sound.
After releasing several demos, blindsheep took a short break in order to recharge their batteries and further the evolution of the band.
In January 2009, female vocalist ★Sei☆ joined, welcoming in a new age, and seeing blindsheep start up activities once again.