Orihime decides to give the members of STAR☆ANIS a day off by renting out part of a water park. As the gang slowly assemble, Mizuki gets delayed due to some sudden radio work. To lighten up the mood, Aoi suggests they have a water sports contest, which soon draws a crowd. Having been called by Ichigo several times, Honoka decides to get Mizuki to the water park as quickly as possible so she can share another memory with them. Noticing the loud crowd they have gathered, the gang decide to secretly put on a song for them. After the park closes, Honoka manages to convince the staff to let the girls stay longer so they can play with Mizuki.