1girl, arknights, baseball_cap, bikini, black_bikini, blue_hair, ch'en_(arknights), ch'en_the_holungday_(arknights), dragon_horns, eyewear_on_headwear, firing, from_behind, goddess_of_victory:_nikke, gun, hat, holding, holding_gun, holding_weapon, horns, kushi_(artist), on_one_knee, one_eye_covered, rapture_(nikke), sunglasses, swimsuit, tail, weapon, white_headwear