....

A white-haired anime girl with cat ears smiles and points to a name tag reading "ひな" on her shirt, then the scene cuts to a group of four girls in swimsuits posing together against a purple, sparkly background. The sequence continues with a photo of the group pinned to a wall beneath the text "Summer 21," followed by close-ups of individual girls smiling, and ends with a girl with grey hair looking at a colorful drink under a beach umbrella.