izumi sai, highres, official art, ascot, black ribbon, blush, book, breasts, brooch, brown eyes, brown skirt, brown vest, chair, character name, clenched hand, closed mouth, collared shirt, cup, dated, elf, english text, green hair, half-closed eyes, hand on own cheek, hand on own face, happy birthday, head rest, holding, holding book, indoors, jewelry, jingai kyoshitsu no ningen girai kyoshi, long sleeves, low-tied sidelocks, medium breasts, on chair, pleated skirt, pointy ears, reading, ribbon, saucer, shirt, short hair, sidelocks, sitting, skirt, smile, sweater vest, table, teacup, vest, wakaba aoi, white ascot, white shirt