1girl, ahoge, arm_support, blue_archive, blue_one-piece_swimsuit, blue_sky, cloud, cloudy_sky, collarbone, demon_girl, demon_horns, demon_wings, hina_(blue_archive), hina_(swimsuit)_(blue_archive), horns, innertube, long_hair, looking_at_viewer, name_tag, ocean, official_alternate_costume, old_school_swimsuit, one-piece_swimsuit, one_side_up, parted_bangs, purple_eyes, school_swimsuit, sidelocks, sitting, sky, sleeveless, solo, sorahachi_(sora823), swimsuit, wet, wet_clothes, wet_swimsuit, whistle, whistle_around_neck, white_hair, wings