1girl, ahoge, anparu, bare_legs, barefoot, beach, blue_archive, blue_one-piece_swimsuit, blue_sky, blush, day, demon_horns, dutch_angle, feet, foot_focus, hair_ornament, hairclip, halo, hina_(blue_archive), hina_(swimsuit)_(blue_archive), horns, long_hair, looking_at_viewer, multiple_horns, off_shoulder, official_alternate_costume, old_school_swimsuit, one-piece_swimsuit, outdoors, parted_bangs, purple_eyes, sand, school_swimsuit, sky, soles, starfish, swimsuit, toes, water, whistle, whistle_around_neck, white_hair