1girl, arknights, bare_shoulders, black_dress, blue_eyes, breasts, chibi, choker, dress, feather_boa, heidi_(arknights), large_breasts, long_hair, looking_at_viewer, multiple_views, pink_hair, red_choker, red_headwear, simple_background, smile, star_(symbol), strapless, touno_(akarino), tube_top, upper_body, white_background