1girl, bada_(jksh5056), bare_arms, bare_shoulders, black_one-piece_swimsuit, blue_archive, blush, closed_mouth, from_behind, grey_hair, hair_intakes, halo, hina_(blue_archive), hina_(swimsuit)_(blue_archive), horns, innertube, long_hair, looking_at_viewer, looking_back, multiple_horns, old_school_swimsuit, one-piece_swimsuit, one_side_up, parted_bangs, purple_eyes, school_swimsuit, solo, swimsuit, very_long_hair, water