CasyusCly (カシアス・クレイ) forms in Sendai (仙台)仙台.
CasyusCly may have existed prior to 1999 with a different lineup, as L'avier Matis bassist Takumi mentions having first played against the band “about 2 years ago” in a September 2000 magazine.
Sometime between March and September, bassist MITSUYA joins.
V. Yosuke (洋輔) / G. KUMA / B. MITSUYA / D. CHIHIRO (千尋) / K. JINYA
At some point after late 2000 (dates unknown), guitarist KUMA is replaced by Makoto, bassist MITSUYA is replaced by Takumi, and keyboardist JINYA secedes.
V. Yosuke (洋輔) / G. Makoto / B. Takumi / D. Chihiro (千尋)
Drummer Chihiro (千尋) secedes.
V. Yosuke (洋輔) / G. Makoto / B. Takumi
Guitarist Makoto secedes and YOSHI≒TAKA begins as support guitarist.
V. Yosuke (洋輔) / Support G. YOSHI≒TAKA / B. Takumi
Bassist Takumi secedes. Support guitarist YOSHI≒TAKA officially joins.
It is presumed that Mick and 2=TOM act as support bassist and support drummer, respectively, around this time. But this is unconfirmed.
V. Yosuke (洋輔) / G. YOSHI≒TAKA / Support B. Mick (?) / Support D. 2=TOM (?)
CasyusCly disbands
CasyusCly revives.
Former guitarist KUMA re-joins and changes his name to kumacchi. Bassist Takumi, drummer Chihiro (千尋), and keyboardist Jinya also re-join.
V. Yosuke (洋輔) / G. kumacchi / B. Takumi / D. Chihiro (千尋) / K. JINYA
CasyusCly pauses activities
CasyusCly reunite for one-night only.