1girl, argyle, blue_archive, braid, breasts, casual_one-piece_swimsuit, cleavage, demon_wings, grey_hair, hair_bun, halo, haruna_(blue_archive), haruna_(swimsuit)_(blue_archive), lizard_tail, looking_at_viewer, medium_breasts, official_alternate_costume, one-piece_swimsuit, partially_submerged, red_eyes, single_braid, single_hair_bun, smile, solo, swimsuit, tail, white_one-piece_swimsuit, wings, yuutosen