1girl, ahoge, bare_arms, bare_legs, bare_shoulders, barefoot, blue_archive, blue_one-piece_swimsuit, foot_out_of_frame, grey_hair, hair_ornament, hairclip, halo, hina_(blue_archive), hina_(swimsuit)_(blue_archive), horns, innertube, long_hair, looking_at_viewer, machico_maki, multiple_horns, one-piece_swimsuit, one_side_up, parted_bangs, purple_eyes, sandals, school_swimsuit, solo, swimsuit, unworn_sandals, very_long_hair, water