Originally started with vocalist Rami and guitarist Yoshi in Osaka, June 2008.

Their music was contained in the compilation album Red Hot Burning Hell Vol.16. Guitarist Toki joined the band in January 2009 and released their first independently-produced EP Dear Slave, which contains 4 songs, in November. This EP was well-received and sold out in many metal music stores. Aldious was officially formed when bassist Sawa, who was playing in the band originally, came back and drummer Aruto also joined the band in January 2010, and they founded a Girls' Metal Label Bright Star Records.

In April, they signed with Spinning as the first Japanese girls' metal band for the label and released their first single Defended Desire in July, while they were becoming to be recognized through the Internet. They got ranked in 4th in the indie weekly ranking by Oricon Style and 49th in single record weekly ranking and 24th in daily ranking.

And in October, their first full album Deep Exceed was released and it won the first place in the indie album weekly ranking by Oricon Style. It also got 15th place in weekly album ranking and 7th in daily ranking.

The following November and December, they performed live shows in Tokyo and Nagoya and tickets were sold out for both shows. Later they held a one-man live show and tickets sold out as well.

In January 2011, they appeared on two very popular TV show called "Sukkiri" (Nippon Television) and "MezaNew" (Fuji Television), and gained more and more fans. In April 2011, they released a second single Mermaid (16th in daily ranking, 20th in weekly ranking, 1st in indie weekly ranking all by Oricon Style) and went on a first one-man tour in Tokyo, Nagoya, and Osaka. Tickets were sold out for all the shows.

The following October they appeared on another famous TV show called "Happy Music" (Nippon Television), and they released the second album Determination (ranked in 8th in daily ranking, 13th in weekly ranking, 2nd in indie weekly ranking). "Spirit Black", which was contained on that album, was used for an ending theme for the show "Shimura Ken" (Fuji Television).

In November to December, they went on tour in 6 places in Japan including Shibuya O-East. In May 2012, they went on a tour again as an encore tour in Tokyo (Akasaka BLITZ), Nagoya (CLUB Diamond Hall), Osaka (BIGCAT) then released a DVD Determination Tour 2011～Live at Shibuya O-EAST～ (got second place in music DVD weekly ranking, 6th in all DVD weekly ranking both by Oricon Style).

Although Rami decided to withdraw from the band in June, the band kept creating music while looking for a new vocalist. A new vocalist, Re:NO, joined the band in August and they released a new single White Crow, which ranked 19th in national weekly ranking, 14th in daily ranking (3rd in indies weekly single ranking).

In November, they went on tour with The Agonist as a supporting band and played in Tokyo (Shibuya O-East), Nagoya (Club Quattro), and Osaka (Osaka Big Cat). They also went on their own tour from the end of November and played in 5 cities including Shibuya O-East Tokyo. They appeared on the TV show "Happy Music" again at the end of December.

On May 13th 2013, they released their third album District Zero. This album was ranked in 4th on daily national ranking and 7th on weekly ranking. This is such a remarkable accomplishment for all-girls band from an Indies label to win 4th in national ranking. "Scrash" from the album District Zero was used as an ending theme for the TV program "Ranking Kingdom" by TBS in June and July.

District Zero Tour will start in July and they are going to perform in 10 cities in Japan, including Shibuya O-East.

(Source: aldious.jp)