R-ONE is formed.
V. ONCE / G. Shinichi Kobayashi (小林信一) / B. Keisuke / D. ITCH
Vocalist ONCE and drummer ITCH leave. Vocalist TSUYOSHI and drummer NAOSHI then join.
V. TSUYOSHI / G. Shinichi Kobayashi (小林信一) / B. Keisuke / D. NAOSHI
Bassist Keisuke leaves, and KENJI joins.
V. TSUYOSHI / G. Shinichi Kobayashi (小林信一) / B. KENJI / D. NAOSHI
R-ONE disbands
R-ONE reunites with Keisuke and ITCH rejoining. Vocalist TSUYOSHI does not return and is replaced by Nash.
V. Nash / G. Shinichi Kobayashi (小林信一) / B. Keisuke / D. ITCH
R-ONE go on a hiatus