Siraph is a Japanese alternative rock band, was formed in 2016 and included Annabel (vocals), Masayuki Hasuo (keyboards), Yoshimasa Terui (guitar), Hideaki Yamasaki (bass), and Ken Yamashita (drums). The group evolved from supporting Annabel's solo work. Annabel, an Argentine-born singer raised in Japan, had previously been part of various dōjin music units and made her major solo debut in 2009.
Siraph released their debut mini-album Siraph in 2016. Their first single "Quiet Squall" (2016) was the ending theme for the TV anime series Bloodivores. The band continued with releases such as Current Mood Vol. 3 (2017) and their full-length album Past & Current (2019). In 2023, they released the EP Utopia.
