yo-co, kagamine len, kaito (vocaloid), vocaloid, official art, 1990s (style), 2boys, arm wrap, artist name, belt, black eyes, black gloves, black shirt, blonde hair, blue hair, book, bracelet, brown cape, brown hairband, brown pants, cape, closed mouth, copyright name, fake horns, film grain, gloves, green eyes, hair between eyes, hairband, hands on own hips, holding, holding book, horned headwear, horns, jewelry, kaitou heaven's knights (vocaloid), looking at another, looking at viewer, male focus, midriff, multiple boys, multiple bracelets, navel, open book, orange background, pants, pelvic curtain, red belt, retro artstyle, shirt, short hair, short sleeves, simple background, single glove, smile