1girl, ahoge, animal ears, black background, black necktie, black shirt, blush, breasts, brown hair, closed mouth, coat, collared shirt, earrings, equation, film grain, glint, hands up, horse ears, horse girl, jewelry, looking at viewer, medium breasts, messy hair, necktie, open clothes, open coat, red eyes, shirt, short hair, short necktie, single earring, sleeves past fingers, sleeves past wrists, smirk, solo, sweater, upper body, yellow sweater