1girl, blue_archive, blue_sky, cloud, cloudy_sky, collarbone, demon_girl, demon_horns, demon_wings, eyes_visible_through_hair, forehead, hair_ornament, hairclip, hina_(blue_archive), hina_(swimsuit)_(blue_archive), horizon, horns, innertube, long_hair, looking_at_viewer, na_na_peko, name_tag, ocean, official_alternate_costume, old_school_swimsuit, one_side_up, parted_bangs, purple_eyes, riding, school_swimsuit, sidelocks, sky, sleeveless, solo, sun, sunlight, swimsuit, wet, wet_clothes, wet_swimsuit, whistle, whistle_around_neck, white_hair, wings