gorgonzola c, 25-ji miku, hatsune miku, 25-ji nightcord de. (project sekai), project sekai, vocaloid, highres, 2girls, black skirt, black sleeves, blue eyes, blue hair, blue necktie, bow, closed eyes, dated, detached sleeves, dress, grey hair, hair bow, hand on own chest, happy birthday, heterochromia, long hair, long sleeves, looking at viewer, multiple girls, necktie, open mouth, pleated skirt, purple eyes, shirt, sitting, skirt, sleeveless, sleeveless shirt, smile, thighhighs, twintails, twitter username, very long hair