Star Time Star Time is a song by Japanese idol group Hey! Say! JUMP under the Japanese talent agency Johnny & Associates. The name Hey! Say! refers to the fact that all the members were born in the Heisei period and JUMP is an acronym for Johnnys Ultra MusicPower. Like agency seniors Hikaru Genji and V6, the group is split into two subgroups: Hey! Say! BEST and Hey! Say! 7 (not to be confused with the temporary group of the same name), which consist of the five oldest members and four youngest members respectively.