3girls, ^ ^, bangs, belt, black hair, butterfly hair ornament, closed eyes, closed mouth, colored tips, cowboy shot, dated, demon slayer uniform, girl sandwich, hair ornament, haori, happy, happy birthday, hoshi (pixiv61907525), hug, japanese clothes, kimetsu no yaiba, kochou kanae, kochou shinobu, laughing, long hair, long sleeves, looking at viewer, looking to the side, miniskirt, multicolored hair, multiple girls, open mouth, pleated skirt, purple eyes, purple hair, sandwiched, siblings, side ponytail, simple background, sisters, skirt, streaked hair, tsuyuri kanao, updo, white background