Here's the link http://www.vice.com/the-vice-guide-to-travel/the-japanese-lo...

And specifically about the host club phenomenon, but surprising in other ways: https://en.wikipedia.org/wiki/The_Great_Happiness_Space%3A_T...

I would note that there is a particular fascination with Japan and sex, and that google is unlikely to give you an accurate depiction at the frequency of weird in Japan.

I suspect that weird exists in any population of sufficient size.