1girl arknights ball bangs bare_shoulders beachball bikini black_hair blue_eyes braid breasts cleavage feather_hair frilled_bikini frills hair_bun hair_ornament hairclip highres id_card innertube jacket la_pluma_(arknights) la_pluma_(summer_flowers)_(arknights) long_sleeves looking_at_viewer medium_breasts megaphone navel official_alternate_costume open_clothes open_jacket parted_lips pool short_hair signature single_braid single_side_bun sitting sleeves_past_wrists soaking_feet solo swimsuit thigh_strap water watori_re whistle whistle_around_neck white_bikini white_jacket wing_hair_ornament