1girl animal_ears arknights arms_behind_back bangs bikini black_hair blush breasts cat_ears cat_girl cat_tail cleavage flower hair_between_eyes hair_flower hair_ornament kochiya_(gothope) looking_at_viewer medium_breasts rockrock_(arknights) short_hair simple_background smile solo swimsuit tail upper_body white_background white_flower yellow_bikini yellow_eyes