Anime about Cuba

A series of anime-style characters in school uniforms appear in a looping sequence, each shown in a close-up with a distinct expression and background motif; the first character covers her mouth with her hands, the second looks back with a surprised expression, the third has a neutral expression with pink stars, the fourth looks down with a slight smile, the fifth is shown in motion with a red object, and the final character looks to the side with a finger to her lips, all set against a plain white background with floating colored dots and shapes.