betti (xx betti), adachi rei, hatsune miku, a.i. voice, utau, vocaloid, highres, 2girls, aqua eyes, aqua hair, aqua necktie, bare shoulders, black sleeves, breasts, detached sleeves, hair between eyes, hair ornament, headphones, headset, long hair, looking at viewer, multiple girls, necktie, number tattoo, open mouth, shirt, simple background, skirt, sleeveless, smile, tattoo, thighhighs, twintails, very long hair