matsuo yukihiro, kurusu nono, chaos;child, science adventure, highres, large variant set, third-party source, variant set, 1girl, black dress, bow, breasts, chest bow, collarbone, cropped jacket, dress, frown, hair ribbon, hekiho academy school uniform, long sleeves, looking at viewer, medium breasts, open mouth, orange hair, own hands clasped, own hands together, red bow, red ribbon, ribbon, sad smile, sailor collar, school uniform, short dress, simple background, tachi-e, white sailor collar, worried