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.

Question: What happened next with Johnny's Jr?
Self-contained rewrite: What happened next with Jin Akanishi's Johnny's Jr.?