4girls, atsuko (blue archive), black leotard, blue archive, blue leotard, chart, comparison, competition swimsuit, covered navel, highleg, highleg leotard, highleg swimsuit, leotard, lower body, multiple girls, one-piece swimsuit, riki mouhu, sakurako (blue archive), shiroko (blue archive), shiroko (swimsuit) (blue archive), simple background, swimsuit, thigh gap, toki (blue archive), white background