1girl, ahoge, animal ears, black footwear, black skirt, black vest, blush, flat chest, full body, green background, grey hair, hair between eyes, holding, holding instrument, instrument, long sleeves, looking at viewer, mary janes, mouse ears, mouse girl, mouse tail, open mouth, red eyes, shirt, shoes, short hair, skirt, smile, socks, solo, star symbol, tail, trumpet, two-tone background, vest, white shirt, white socks