JACKJACK is formed.
V. Kenji Aoki (青木堅治) / V. 篠田光亮 / V. 根本正勝
A fourth vocalist, 加藤良輔, joins.
V. Kenji Aoki (青木堅治) / V. 篠田光亮 / V. 根本正勝 / V. 加藤良輔
A scandal concerning an affair between the then-wife of sumo wrestler 花田虎上, 花田美恵子, and Vo. 青木堅治 breaks the tabloids. As a result, 青木堅治 announces not only his departure from JACKJACK, but also a halt to his overall acting and music career in general.
As a result of the controversy surrounding 青木堅治, JACKJACK disbands
JACKJACK was a visual kei project. They were active from 2006 to 2007 and are now disbanded.