In November 2000 vocalist Aiyu decided to build up a new band. Its first activities were as a session band, and their first appearance was during a session event at the Kofu CONVICTION on November 25th. The members of this session are unknown. After that live the bassist Sei joined and that was the official start of ∀ile≠de[Σu]. A few months after, in February of 2001 drummer Ryuuya (ex-nightmare) joined and on the 11th the band played their first concert as a real band, again at the Kofu CONVICTION, which would become the main stage of their career.
∀ile≠de[Σu] became more and more solid as their first guitarist Kei joined in March. Another month later the group was finally completed when guitarist Saki joined. The same month they signed under the indie label kathiwari records and the band was able to start recording their songs. In July they participated on their label's omnibus youjiki. Shortly after, they started their first nationwide tour, which lasted until December.
In February of 2002 they released their first demo tape, called Blue Moon ~ao no senritsu~ and went on their second tour. During that tour the band contributed to the slightly famous omnibus album Punishment Party. At their tour final on April 28th at the Kofu CONVICTION their guitarist Saki decided to leave. In June the new guitarist Shun joined and the band started their third tour that went from June to September. Things were going fine for the band, however guitarist Kei and drummer Ryuuya decided to leave after a final live on December 21st at their favourite club. This was the end of the first 'generation'.
On January of 2003 the band returned with many changes. First of all their name became Eile de Mu. Also their new guitarist Kyo-ya (ex- oiran, INSANITY) joined and the band itself signed under Sequence Records. These changes led the band to start a new chapter of their career, leaving the past behind. And the first thing to do was to start yet another tour. On April 19th drummer Lica joined during their concert on their favourite stage. In June they released their second demo tape Mysterious, which was pre-released at one of their concerts at the end of May, and they embarked on another tour one month later. This would become the last tour with Kyo-ya, who left after the final concert at the Kofu CONVICTION on September 21st.
Without him the band participated on its label's first omnibus album, called SUMMIT 01. In December their former guitarist Saki rejoined. Shortly after, they took a short break during which they started their own label CREED and returned for further activities on May 23rd. In August they released their first mini-album and on Halloween they participated in an event at Takeshiba CLUB HOLIDAY, where other famous bands such as RENTRER EN SOI, Guruguru Eigakan, emmuree, Vinett, and even YUKARI (ex- BAISER) played on the stage. After that they concentrated on playing concerts and organizing their own events, and also participated on several omnibuses.
In June of 2005 their second mini-album was released and the band did what they did best, going on several nationwide tours. Although they were one of the most famous indie bands of that time, their activities were hardly kept in mind, mostly because there were no member changes or other memorable actions. Somewhere in end of 2005 theY decided to break up and announced a last tour and their first and only maxi-single. In January they started a series of ten concerts and released shinshia.. On March 11th they returned to Kofu CONVICTION for the last time and disbanded after the oneman show.
Yet most of the members haven't returned in new bands, at least they weren't seen on stage by the fans. Although vocalist Aiyu and former guitarist Kyo-ya were active in monokuro kinema, guitarist Sei became the only one to still be active in 2008. After a short stay with dali he joined LOST NAME, which disbanded in March of 2008. Since then he hasn't been active either.
