User blog comment:Hielmiez/Aikatsu Friends! Next Aikatsu series?/@comment-26426093-20180101145517/@comment-3487190-20180111180529

@Williukea Well, personally I don't find your saying works. The officials, in their aspects, can simply confirm the connections in order to promote all series together, otherwise common assumptions usually say that the new series is set in a new universe.

Ultimately the main purpose of introdicing a new universe is to having idols fighting to be the best all over again. If the universes coexist, some the plot ideas would never work, such as why Aikatsu! rankings never have old/new idol schools together etc.

Of course the possiblity of Aikatsu Friends! or further future series merging multiple universes into a new one exists, But just focus on the current story of Aikatsu Stars, the rivalry only exist between a small group of idols/brands so that rules out any other possible rival in the same universe.