You don't see girls in light-colored swimsuits in the pool anymore... but the girls in this work are wearing white and pink swimsuits. And they're school swimsuits! If a light-colored retro school swimsuit gets wet... YES! You can see through her boobs, butt, and private parts! The skin that shows through a wet swimsuit is a whole different kind of eroticism than being naked! It's visually super erotic! It's unfair to see a school swimsuit that's slippery with lotion and is see-through!