- 2002-06-11 azure is formed by HIDEKI, with 3 official members and 1 support member.
- 2002-08-10 First live is held at Shinsaibashi (心斎橋) BAHAMA.
- 2002-08-10 Oboreta Sakana/Little Letter released.
- 2002-11-00 The then-guitarist secedes. Guitarist Jun-Ichi joins.
- 2002-12-00 The current drummer secedes.
- 2002-12-30 Guitarist Yu-Ji joins.
- 2003-02-07 side distance released.
- 2003-03-00 The current bassist secedes. Shuujirou (修二郎) (PAZUE) and NAOKI (ex-Lapis-en-Neant) join as support bassist and drummer, respectively.
- 2003-06-00 Support drummer NAOKI secedes.
- 2003-07-00 KAZU (DAGGER) joins as support drummer.
- 2003-08-29 Guitarist Jun-Ichi secedes.
- 2003-09-28 Guitarist KEN joins.
- 2003-10-00 Support drummer KAZU secedes.
- 2003-11-00 TSUBAKI (椿) joins as support drummer.
- 2003-11-28 First sponsored live is held at LIVE HOUSE ZiPPY.
- 2003-12-12 Setlist: 1. Answer / 2. Hana GA ChiRU Kisetsu (花ガ散ル季節) / 3. Yuugure BLUE (夕暮れブルー) / 4. SPARK / 5. play / 6. A.C / 7. Love you only
- 2003-12-12 Ante Meridiem released.
- 2003-12-20 First twoman live vs Rapi-d is held at Shinsaibashi (心斎橋) BAHAMA.
- 2004-01-20 Twoman live with NoeL and opening act PLUS×CANNER is held at Nishikujo (西九条) BRAND NEW.
- 2004-01-20 Shiroi Toiki released.
- 2004-01-30 Setlist: 1. Shiroi Toiki (白い吐息) / 2. ANSWER / MC / 3. Yuugure BLUE (夕暮れブルー) / 4. SPARK
- 2004-02-27 Vocalist HIDEKI participates in session Siberian Husky (しべりあんはすきー) [V. HIDEKI (azure) / G. Hibiki (Plastic) / B. DAI / D. GOD] at Shinsaibashi (心斎橋) BAHAMA.
- 2004-03-18 Side distance released.
- 2004-03-18 Imi kara Riyuu ni naru Katei released.
- 2004-05-00 Support bassist Shuujirou (修二郎) secedes. Akito (暁斗) joins as support bassist.
- 2004-05-05 Post Meridiem released.
- 2004-05-17 Ante Meridiem 2nd PRESS released.
- 2004-10-30 Threeman with LANDSCAPE and RABBIT is held at Nishikujo (西九条) BRAND NEW. azure makes an important announcement: they will hold their first oneman in 2005.
- 2005-01-15 Sponsored event, NEVER Yu-Ji'ng STORY ~Yuujintachi no Tsudoi~ (NEVER Yu-Ji'ng STORY ~友人達の集い~), is held at Shinsaibashi (心斎橋) FANJ-twice. An important announcement is made: the band will hold their first oneman, at which guitarist KEN will secede.
- 2005-02-11 First oneman live, Sennen no Koi (千年乃恋), is held at Shinsaibashi (心斎橋) FANJ-twice. KEN secedes.
- 2005-02-11 Kimi dake ni Hanataba wo released.
- 2005-04-01 azure announces their indefinite activity pause via their OHP.
- 2005-04-01 azure indefinitely pauses activity
- 2006-01-01 Members begin calling themselves “ex-azure” and OHP is closed―azure unofficially disbands.