A.B.C-Z was formed when Ryosuke Hashimoto was moved to Johnny's junior unit A.B.C (Acrobat Boys Club, 2001-2008) in 2008. Soon after the formation of the group they held their first solo concerts as a group together with Kis-My-Ft2 at Yokohama Arena and Yoyogi Stadium. In May 2010 they held and produced their own concert at Theater Crea in Tokyo, with more solo live shows throughout May.
On November 6th 2011 they held their first one-man concert at Tokyo’s Yoyogi National Stadium for 26,000 fans. They also announced that in February next year they will be hosting a play, titled “ABC-za Star Kouen”, at Nissay Theater in Tokyo, and Johnny Kitagawa commented that they may debut the next year. On December 9th A.B.C-Z held a press conference for their upcoming stage play “ABC-za Star Kouen”. They also announced that they will be debuting in 2012 with a DVD, and would make them the first Johnny's group to do so. By the end of December 2011 it was announced that the DVD was to be released under Johnny's Entertainment, with a release date for February 1st, 2012. A.B.C-Z officially debuted in February 2012 with their DVD Za ABC ~5 Stars~ and is now a former-Johnny's Junior unit.