izumi sai, highres, official art, 1girl, :d, animal ears, arms up, black horns, blonde hair, blue eyes, blush, breasts, character name, clenched hands, collared shirt, crossed bangs, dated, dragon ears, dragon girl, dragon horns, dragon tail, drill hair, drill ponytail, drill sidelocks, english text, hair between eyes, happy birthday, horns, jacket, jingai kyoshitsu no ningen girai kyoshi, large breasts, long hair, long sleeves, looking up, necktie, open mouth, pleated skirt, pointy ears, red jacket, red necktie, ryuzaki karin, shirt, sidelocks, skirt, smile, solo, standing, tail, thighhighs, thighs, white shirt, white skirt, zettai ryouiki