Marital sex in Japan II

I blame my Catholic upbringing. I still find it difficult to get it on with the wife when the boy is in the flat. The only door separating the bedroom and the main room is made of paper. Once I caught my parents in the act and it scarred me.

The wife is cool with everything just as long as we don't make noise. Who doesn't make noise when they shag?
Of course ones sex life changes after a kid. This is the same the world over. The thing in Japan is the small rooms and paper thin wall. Making love is no longer spontaneous. It is a planned event. Something is lost.