You might want to correct the left wing media then. They seem to think Japanese people are not having sex.Lots of reasons for the decline.
-More people working and focusing on their careers.
-Not enough support from the government for nurseries.
-Rising costs of life.
-An overall disinterest in dealing with the nuisances that family life can bring.
They screw, but they don't feel the need to pop out kids at the same rate as China or India.
https://www.theguardian.com/world/2013/oct/20/young-people-japan-stopped-having-sex
Though it wouldn't surprise me if they are lying about this too.