kujira, original, commentary request, 1girl, banner, between legs, black one-piece swimsuit, blush, cropped legs, demon girl, demon tail, green eyes, green thighhighs, grey hair, hands up, head wreath, holding, holding banner, horns, looking at viewer, medium hair, one-piece swimsuit, romaji commentary, school swimsuit, simple background, smile, solo, standing, swimsuit, tail, tail between legs, thighhighs, white background