1girl, arknights, bare_shoulders, black_hair, black_one-piece_swimsuit, blacknight_(arknights), blacknight_(summer_flower)_(arknights), breasts, casual_one-piece_swimsuit, detached_sleeves, grey_eyes, groin, horns, lengdongku_cc, long_hair, looking_at_viewer, one-piece_swimsuit, parted_lips, pointy_ears, solo, swimsuit, upper_body, very_long_hair