- 1999-03-00 Gu:Laymu is formed under Matina by vocalist Kai(?) (華威) and guitarist ATSUTO.
- 1999-03-00 【lineup】 V. Kai(?) (華威) / G. ATSUTO / B. TATSUYA
- 1999-03-24 First live is held.
- 1999-04-00 Sometime after formation, G. Shin (秦) and D. Taka (躱迦) join. (Date unknown, but sometime before May 1999.)
- 1999-04-00 【lineup】 V. Kai(?) (華威) / G. ATSUTO / G. Shin (秦) / B. TATSUYA / D. Taka (躱迦)
- 1999-06-25 Gu:Laymu released.
- 1999-09-00 G. ATSUTO secedes. (Date approximate; he left sometime after their 1999-08-12 live.)
- 1999-09-00 【lineup】 V. Kai(?) (華威) / G. Shin (秦) / B. TATSUYA / D. Taka (躱迦)
- 1999-10-00 V. Kai(?) (華威) and B. TATSUYA secede. (Date unknown; the band was down to two members and had paused activities by November 1999.)
- 1999-10-00 【lineup】 G. Shin (秦) / D. Taka (躱迦)
- 1999-10-10 「Kyuuketsu no Kan」 released.
- 1999-10-24 Matina 2nd ANNIVERSARY 1999.8.12 Osaka Umeda HEAT BEAT released.
Certain magazines had said that the remaining Gu:Laymu members would announce a new band together on this day. Instead, G. Shin (秦) announced that he would join
Eze:quL, and D. Taka (躱迦) announced that he would join Mist of Rouge.
- 2001-01-31 PRELUDE:2 ~en effort of resalt~ released.