kusaka souji, yotsuba (sister princess), sister princess, jpeg artifacts, 00s, 1girl, :o, bikini, blue bikini, blue ribbon, blush, breasts, brown eyes, brown hair, clenched hands, female focus, flag print, floral print, hair ornament, hair ribbon, hairclip, jacket, leg up, long sleeves, looking at viewer, navel, open clothes, open jacket, outline, print bikini, ribbon, shoes, short hair, simple background, sleeves past wrists, small breasts, sneakers, socks, solo, sweater, swimsuit, twintails, two side up, union jack, unzipped, watermark, web address, white background, white socks