1girl, alternate costume, armband, bag, bird mask, black socks, blue hair, bow, bowtie, breasts, closed mouth, collared shirt, costone, dark blue hair, dress shirt, expressionless, feet out of frame, genshin impact, hand up, kujou sara, large breasts, looking at viewer, mask, mask on head, miniskirt, pleated skirt, red bow, red bowtie, red mask, school bag, school uniform, shirt, shirt tucked in, short hair, short sleeves, shoulder bag, simple background, skirt, socks, solo, thighs, white background, white shirt, yellow eyes