The Japanese all-girl heavy metal band Cyntia were the first members of what was later termed Japan's 'girl metal band boom' to sign to a major label. Other bands within the movement were Aldious and Destrose both of whom were signed to independent labels. The group was founded by guitarist Yui and drummer Kanoko in 2011 and after recruiting keyboard player Ayano and bassist Airi plus Saki, a former idol singer, the girls declared themselves ready to launch the band and released their debut single 'Run to the Future' in 2012. The album 'Endless World' followed later that year and reached number 22 in the Japanese charts. It was a promising beginning for what was a new genre in Nippon heavy metal.
The peak of the band's commercial success came in 2014 when their third album release 'Limit Break' reached number nine in the Oricon charts. In 2017 guitarist Yui developed focal dystonia, a medical condition which can induce involuntary muscle contractions, a career ending condition for most musicians but particularly for a guitarist. Yui had decided to leave the band and make way for a replacement but the group decided not to replace her and elected to disband in January 2018.
