1girl, d, ahoge, ball, beach, beachball, bikini, blue_bikini, blue_sky, breasts, cloud, collarbone, curled_horns, day, demon_girl, demon_horns, demon_tail, fang, hair_between_eyes, holding, holding_ball, horns, kanaria_hisagi, long_hair, looking_at_viewer, machikado_mazoku, medium_breasts, ocean, open_mouth, orange_eyes, outdoors, red_hair, sand, sitting, skin_fang, sky, smile, solo, summer, swimsuit, tail, thighs, yoshida_yuuko_(machikado_mazoku)