kuroneko shiro, kagamine len, kagamine len (append), kagamine rin, kagamine rin (append), vocaloid, vocaloid append, absurdres, highres, 1boy, 1girl, :p, aqua eyes, arm warmers, bare shoulders, black thighhighs, blonde hair, blush, brother and sister, detached sleeves, groin, hair ornament, hair ribbon, hairclip, headphones, leg warmers, looking back, navel, no panties, open clothes, open fly, open shorts, popped collar, ribbon, short hair, shorts, siblings, smile, thighhighs, tongue, tongue out, twins, undressing, unzipped