1980s_(style), 2girls, anice_farm, bikini, blue_sky, breasts, brown_hair, character_name, chouon_senshi_borgman, cloud, crossover, day, frilled_bikini, frills, from_below, inflatable_toy, innertube, kabashima_yousuke, leina_stol, long_hair, machine_robo, machine_robo_chronos_no_gyakushuu, multiple_girls, outdoors, pink_bikini, ponytail, retro_artstyle, short_hair, sky, small_breasts, strapless, strapless_bikini, swimsuit