1girl bikini black_bikini blue_archive clothes_lift fingernails flat_chest frilled_bikini frills halo highres hiroki_(yyqw7151) lifted_by_self long_hair looking_at_viewer mutsuki_(blue_archive) nail_polish navel pink_nails purple_eyes shirt shirt_lift side_ponytail simple_background smile solo swimsuit upshirt white_background white_hair white_shirt