1girl, beach, beach_umbrella, bikini, blue_archive, blue_hair, blue_sky, blurry, bow, bowtie, breasts, chise_(blue_archive), chise_(swimsuit)_(blue_archive), cleavage, cloud, cloudy_sky, depth_of_field, fumi_(fumibeing), hair_between_eyes, hair_ornament, halo, horizon, horns, innertube, long_hair, looking_at_viewer, navel, ocean, official_alternate_costume, oni_horns, outdoors, red_eyes, sailor_collar, side-tie_bikini_bottom, side_ponytail, sidelocks, sky, sleeveless, solo, stomach, striped, striped_bikini, swimsuit, umbrella