Mardelas was started in 2014 as a solo project of Marina Hebiishi, ex-vocalist of
Destrose. She was joined by members of Screaming Symphony and
Light Bringer, and the band got a record deal with
King Records. The band's debut studio album, titled
Mardelas I, was released on April 22, 2015. The album was ranked No. 49 on
Oricon's albums chart. That same year, they released a single "Thousand Cranes". The second full-length album,
Mardelas II, was released on June 15, 2016. After a live show on May 6, 2017, bassist Hibiki left the band. He was later replaced by Hisayuki Motoishi.
Mardelas III, released on May 22, 2019, is a concept album about a widow plotting revenge for her husband's assassination. In 2021, they released first live video album
Mardelas Official Bootleg Vol.1 -Faith in Tomorrow-. The band's fourth album,
Mardelas IV, was released on September 7, 2022. In 2023, they released a single "Snake to the Fire", the first to feature lyrics written entirely in English. == Members ==