Episode 19: Find It! The Mermaid's Stardust

Summer vacation is finally here. In her dream, Aozora Himari encounters the Mermaid Grand Prix outfit that she received as the grand prize outfit at the 2nd Aipri Grand Prix. She is then given the challenge of finding the mysterious treasure, "Mermaid Stardust," that lies dormant in the sea if she wants to wear it. After that, Himari goes on a family trip to a villa near the sea. It turns out to be the villa of Mitsuki Hoshikawa's grandparents, and Mitsuki is also there. While enjoying their summer fun, Himari finds out that Mitsuki had the same dream, so she invites Tsumugi Suzukaze and the three of them go looking for the "Mermaid Stardust" that lies dormant in the sea of ​​Aipriverse. What is the true identity of the mysterious treasure?