Hey! Say! JUMP is a 9-member Japanese idol group formed by Johnny's Entertainment. The name Hey! Say! refers to the fact that all of the members were born in the Heisei period (1989-present). JUMP is an acronym for Johnny's Ultra Music Power. The group debuted in 2007 with 10 members.
In 2011, Morimoto Ryutaro was indefinitely suspended from the group following an underage smoking scandal.