1girl, ahoge, animal ears, ascot, bangs, beret, black background, black dress, brown hair, dark, days in a flash (umamusume), dress, ear covers, frilled sleeves, frills, frown, hairband, halloween, halloween costume, hat, holding, holding staff, horse ears, horse girl, jack-o'-lantern ornament, long sleeves, looking at viewer, medium hair, meisho doto (dot-o'-lantern) (umamusume), meisho doto (umamusume), multicolored hair, neck ribbon, official alternate costume, open mouth, orange headwear, orange ribbon, purple eyes, purple hairband, ribbon, sakuma mashiro 16, simple background, single ear cover, solo, staff, two-tone hair, umamusume, upper body, white ascot, white hair