1girl, ahoge, bare_legs, barefoot, black_one-piece_swimsuit, blue_archive, blush, closed_mouth, demon_girl, demon_horns, demon_wings, eyelashes, feet, halo, hands_on_feet, hina_(blue_archive), hina_(swimsuit)_(blue_archive), holding, horns, innertube, legs, long_hair, looking_at_viewer, multiple_horns, official_alternate_costume, one-piece_swimsuit, parted_bangs, pink_eyes, sandals, school_swimsuit, sidelocks, simple_background, single_sandal, sitting, soles, solo, swimsuit, thighs, toenails, toes, twintails, white_background, wings, yume_(454565427)