2girls, :d, alternate costume, animal ear fluff, animal ears, blush, closed mouth, collarbone, eighth note, expressionless, greyscale, long hair, looking at viewer, monochrome, motion lines, multiple girls, musical note, open mouth, oripathy lesion arknights, playing with another's ears, short hair, short sleeves, simple background, sitting, smile, squirrel ears, squirrel girl, squirrel tail, sweatdrop, tail, very long hair, white background