1girl, ahoge, arknights, ball, beachball, beudelb, bikini, black_eyes, black_hair, blue_jacket, blush, breasts, cleavage, gradient_background, hair_between_eyes, hair_bun, hands_up, holding, holding_ball, jacket, la_pluma_(arknights), la_pluma_(summer_flowers)_(arknights), large_breasts, long_sleeves, looking_at_viewer, official_alternate_costume, open_clothes, open_jacket, short_hair, solo, swimsuit, white_bikini