Aqua Timez formed in 2000 after two of the original members, the vocalist and bass met on the internet and discovered that they attended the same university. At their formation with all their current members in 2003, the band's name was Aqua Times, the correct spelling of their current name. No major releases came from the band during this period. The band renamed themselves to Aqua Timez in 2005. Their first release under this name was Sora Ippai ni Kanaderu Inori, a mini-album...

 Aqua Timez formed in 2000 after two of the original members, the vocalist and bass met on the internet and discovered that they attended the same university. At their formation with all their current members in 2003, the band's name was Aqua Times, the correct spelling of their current name. No major releases came from the band during this period. The band renamed themselves to Aqua Timez in 2005. Their first release under this name was Sora Ippai ni Kanaderu Inori, a mini-album which charted well on the Oricon. In 2006, the group would go on to release Nanairo no Rakugaki, their second mini-album with seven songs. Their first single, "Ketsui no Asa Ni", was then used as a song in the movie adaptation of Brave Story. Later in the same year, it was announced that they would provide the theme song to Bleach: Memories of Nobody, the movie version of the anime and manga series Bleach. The song, "Sen no Yoru wo Koete" (千の夜をこえて; Passing Over a Thousand Nights), entered the Oricon singles chart at number 5 and would go on to sell over 100,000 copies. Later that year, the full first album for the band was released. Kaze wo Atsumete was their first full length album and reached a peak position of 3rd on the Oricon charts. Since its release, the album has sold over 200,000 copies. "Shiori", their third single, was used in commercials for a brand of soft drink known as Mitsuya Cider and was number 5 on the Oricon. The following year in 2007 the band would return to Bleach. Their fourth single, "ALONES", was used as the 6th opening song for the anime and climbed to the #3 spot on the Oricon. More recently in 2007, the band has produced their 5th single "Chiisana Tenohira" (#5 on the Oricon), and their second full-length album Dareka no Chijoue was released on November 21. After half a year had passed from their last single, they released their 6th single "Niji", which was used as the theme song for Gokusen 3. On October 1, 2008, their 7th single "Natsu no Kakera" was released. On January 14, 2009, Aqua Timez released a single called "Velonica", which was used as the 9th opening of Bleach. On March 4, 2009, they released their 9th single "STAY GOLD" followed by their third full album Utai Sarishi Hana on the 11th which has been certified Gold for shipment of 100,000 copies .