1girl, ahoge, arknights, bad_pixiv_id, ball, bare_shoulders, barefoot, beachball, bikini, black_hair, blue_background, breasts, cleavage, feather_hair_ornament, feathers, gradient_background, hair_bun, hair_ornament, holding, holding_ball, id_card, jacket, jacket_over_swimsuit, la_pluma_(arknights), la_pluma_(summer_flowers)_(arknights), leg_up, long_sleeves, medium_breasts, mizuhashi_parusui, navel, off_shoulder, official_alternate_costume, open_clothes, open_jacket, purple_eyes, short_hair, single_hair_bun, single_side_bun, solo, standing, standing_on_one_leg, stomach, swimsuit, thigh_strap, whistle, whistling, white_bikini, white_jacket