Ohh XDHold on a minute, didn't Ame-no-Uzume dance naked in that legend? If her attire is the inspiration for shrine maidens, then doesn't that mean...
author really found a legal way to draw actual penis
Craziest festival I've ever seen
https://en.wikipedia.org/wiki/Kanamara_Matsuri
i know, that's why i said it's legal way to draw actual penis.