1girl, all fours, alternate hair length, alternate hairstyle, animal ears, blush, cat ears, cat tail, collared shirt, fang, frilled shirt collar, frills, green eyes, green skirt, green vest, grey hair, hitodama, long hair, open mouth, pleated skirt, puffy short sleeves, puffy sleeves, shirt, short sleeves, simple background, skin fang, skirt, solo, tail, vest, white background, white shirt