Ranma 1/2 is a light comedy romp. It shovels out casual nudity right and left, starting with the main character's obliviousness to "female modesty" when in his "cold wet" state. Wet T-shirt opportunities abound.
Consequently, any true collection reflecting the high points of the series must show a little obligatory skin. And a section such as this is as necessary to this gallery as a wine cellar is to a wine connoisseur.
So, you've been properly warned before proceeding. And, remember, this isn't the Louvre. A sense of humor is all that is really necessary.