1girl, blue_archive, blue_one-piece_swimsuit, buoy, closed_mouth, hair_ornament, hairpin, hina_(blue_archive), hina_(swimsuit)_(blue_archive), long_hair, looking_at_viewer, low_wings, official_alternate_costume, one-piece_swimsuit, partially_submerged, red_eyes, sb_lama, school_swimsuit, solo, swimsuit, water, whistle, whistle_around_neck, white_hair, wings