Aine and Mio invite Raki on a picnic, where they are joined by Ichigo, Akari and Yume. The idols reveal that they want to thank Raki for the success of Aikatsu on Parade, so they are planning on a joint performance. Raki's sister Saya returns home and finally reveals the truth behind her experiment to unite the worlds of Aikatsu, but the experiment must come to an end and the worlds must be separated. Saya tells Raki it will be the last time she gets to perform with her new friends.