Bubble yum bum

A blonde anime girl in a school uniform stands with hands on her hips in a traditional Japanese room, then the scene cuts to a close-up of a pink-haired girl in a similar uniform, followed by a shot of a girl with animal ears and a blue skirt being lifted into the air against a green background. The sequence includes a brief moment of two girls embracing, one with dark hair and a red scarf, the other with blonde hair and a blue headband, in a room with sliding doors.