1girl, alternate costume, animal ear fluff, animal ears, bag, black serafuku, black shirt, black skirt, blush, cat ears, closed mouth, extra ears, green eyes, grey hair, hair ornament, hairclip, holding, looking at viewer, pleated skirt, sailor collar, school bag, school uniform, serafuku, shirt, simple background, skirt, solo, white background, white sailor collar, x hair ornament