original, highres, 4girls, arms behind head, arms up, bag, black dress, black hair, collage, dress, from behind, greyscale, lineart, long sleeves, looking at viewer, monochrome, multiple girls, multiple views, pleated skirt, ponytail, sailor collar, sanke, school uniform, serafuku, shirt, shoes, short hair, shoulder bag, simple background, sketch, skirt, sleeveless, socks, standing, tank top, tote bag, walking