Japanese pornography is undoubtedly the most globally widespread kind of Asian porn there is. It is so popular that it is even considered its own genre on almost every Western porn site. Aside from its host of uniquely Japanese sub-genres Bukkake, Gokkun, Omorashi, tentacle erotica and a whole lot of other weird stuff , Japanese porn particularly stands out for the high-pitched, exaggerated and almost child-like moaning and crying from female performers.
When you imagine having sex that you're totally into, crying probably isn't part of the picture. But sometimes when you're in the middle of doing the deed, your emotions take over and you suddenly find tears leaking out of your eyes. You might feel surprised depending on the situation, but being overcome with feelings during the act is actually pretty normal, even when you actively want to have sex.