Japan is a weird place with weird people. But thank God for them.
Yes, many components of Japan and many asian countries such as China, haven't changed much since feodal times. Namely, women are expected to serve men, as if we were still in the year 1517. It is quite retrograde but oh well, it is the way it is!
They're also not comfortable showing uncensored pussies, for some reason. All this castration overseeing the sexual world of asians, leads to many doujin artists drawing the most bizarre hentai of tentacle rape, lots of rape and very weird things. It is not very healthy what they are doing to men and women in asian countries. Too much regulations surrounding porn and sex in general.