Aikatsu! x PriPara THE MOVIE -Deai no Kiseki-

Akari Oozora and Laala Manaka. Two idols shining in their own worlds suddenly find themselves on the same stage!<br>
A magical encounter between two worlds that was never supposed to intersect: <i>Aikatsu</i> and <i>PriPara</i>!<br>
The idols of Starlight Academy and Parajuku were enjoying a dream collaboration at the joint live festival, but before they knew it the outside world was in big trouble..!?<br>
The perfect stage packed with excitement and glitter! Everyone's friends, everyone's idols — their idol activities begin right here!<br><br>
(Source: Official Website, translated)