Clein is formed in Ichikawa (市川)市川.
Clein apparently goes through several vocalists, guitarists and bassists for the next several months.
V. ? / G. ? / B. ? / D. Tomokazu
Clein play their first live.
Vocalist Joutarou (丈太郎) joins.
V. Joutarou (丈太郎) / G. ? / B. ? / D. Tomokazu
Unknown guitarist and bassist leave, and guitarist Misaki and bassist Taien then join, establishing the first documented lineup of Clein.
V. Joutarou (丈太郎) / G. Misaki / B. Taien / D. Toshikazu
Everyone besides drummer Toshikazu leaves (again), and a new lineup joins.
Clein announces its disbandment.
Clein officially disbands
Clein was a visual kei band in Ichikawa. They were active from 2000 to 2001 and are now disbanded.