1girl, arknights, ass, back, bad_pixiv_id, bare_arms, bikini, bird, blue_bikini, blue_hair, blue_sky, breasts, ch'en_(arknights), ch'en_the_holungday_(arknights), ch'en_the_holungday_(elite_ii)_(arknights), closed_mouth, cloud, cowboy_shot, day, dragon_girl, dragon_horns, dragon_tail, floating_hair, flower, from_behind, gun, hair_between_eyes, hair_flower, hair_ornament, halterneck, holding, holding_gun, holding_weapon, horns, kernel_killer, large_breasts, long_hair, looking_at_viewer, macaw, multi-strapped_bikini, official_alternate_costume, outdoors, palm_leaf, parrot, pink_flower, rainbow, red_eyes, rubber_duck, sky, solo, standing, swimsuit, tail, wading, water, weapon