It’s ready!

A red-haired girl in a school uniform stands with her arm raised, then the scene cuts to a close-up of her hands gripping those of two other girls during an arm-wrestling match. The black-haired girl on the left and the blonde girl on the right strain with determined expressions, while the red-haired girl watches from behind the table, her face contorting in a scream as the blonde is pulled forward. The setting is a classroom with a window showing trees outside.