The Summer Queen Cup is coming up and Pretty Top has decided to have Mion as one of the 2 in the duo to compete. The only problem is, is that they don't know if they Shōld put Aira or Rizumu as her partner. Aira suggested to go on a girls' date to decide. Mion didn't really have fun on either date. She decided to have Aira and Rizumu do a prism show to show her which one is more worthy. In the end, even though Rizumu had gone through the trouble of learning a new prism jump, Mion had chosen Aira making Rizumu frustrated and run away.
