Conversation so far:
What was Jin Akanishi's first band?
After Jin Akanishi was made a Johnny's Jr. member in 2000, Akanishi was part of a number of groups before being drafted into a six-member unit with KAT-TUN.
Any notable songs with Jin Akanishi's KAT-TUN?
Jin Akanishi was also a songwriter for the group, having written songs for KAT-TUN and for himself, including Hesitate, Love or Like, Lovejuice, Care, and Wonder.
What happened next with Jin Akanishi's Johnny's Jr.?
Much to the Japanese public's surprise, Jin Akanishi announced in a press conference on October 13, 2006, that he was leaving the country to study English abroad.
Was Jin Akanishi with another band besides KAT-TUN?
Jin Akanishi was part of a number of groups like Musical Academy Dancing, J2000 and B.A.D.
Was Jin Akanishi's KAT-TUN successful?
Despite KAT-TUN's popularity, they were not allowed to make their bow until five years later in 2006, to immense success.

Question: When was KAT-TUN formed?
Self-contained rewrite: When was Jin Akanishi's KAT-TUN formed?