akuhaku, kagamine len, kagamine len (append), kagamine rin, kagamine rin (append), vocaloid, vocaloid append, highres, 1boy, 1girl, arm warmers, bare shoulders, blonde hair, blue eyes, brother and sister, detached sleeves, from behind, hair ornament, hair ribbon, hairclip, headphones, leg warmers, looking back, microphone, open mouth, ribbon, short hair, shorts, siblings, sitting, smile, thighhighs, twins