boob jiggle

The main subject is a green-haired female character in a school uniform who dances in time with arrows scrolling up the screen, while a purple-haired character stands behind a speaker and a yellow-haired character sits to the right, all in a dark room with a stage-like setting. Across the loop, the green-haired character repeatedly raises her right arm and shifts her weight in sync with the gameplay, while the arrows above her change in sequence.