Necessary (ネセサリィ) is formed.
At some point during the year, guitarist Yamato (大和) changes his name to Yuusuke (祐介).
At some unknown time, vocalist Akito (秋兎) changes his name to Akito (あきと), and bassist Izuna (倭沙) changes his to Izuna (いずな). It's unclear if these name changes happened at the same time as the guitarist's.
V. Akito (秋兎) / G. Yamato (大和) / G. Mayune (繭音) / B. Izuna (倭沙) / D. Sachika (紗千伽)
↓
V. Akito (あきと) / G. Yuusuke (祐介) / G. Mayune (繭音) / B. Izuna (いずな) / D. Sachika (紗千伽) (?)
At some point after the secessions of the guitarists, new guitarists Remi (麗魅) and Yarehasu (破蓮) join.
Drummer Sakura (さくら) also joins at some point, but later secedes.
V. Akito (あきと) / B. Izuna (いずな) / D. Sakura (さくら) / (?)
↓
V. Akito (あきと) / G. Remi (麗魅) / G. Yarehasu (破蓮) / B. Izuna (いずな)
Necessary disbands
Necessary was a visual kei band. They were active from 2002 to 2003 and are now disbanded.