1girl, angel wings, aqua eyes, aqua hair, aqua nails, bare shoulders, binary, blush, dated, detached sleeves, feathered wings, happy birthday, headphones, headset, holding, holding hair, long hair, looking at viewer, necktie, open mouth, pink background, pleated skirt, shirt, skirt, sleeveless, sleeveless shirt, smile, solo, thighhighs, twintails, two-tone background, very long hair, white wings, wings, zettai ryouiki