Wtf are these coments? Its not ok for japanese people to fuck outside the marriage, its not ok to cheat at all. What happens its that its common for woman to stop working after marriege, so after you have 3 kids its kind of hard to get a divorce because you found out your husband cheated on you. But that happens all around the world.
you guys need to stop seeing random videos on youtube and take this as mandatory. First because japan is huge and tokyo is different from the country side but almost everything you see about japan is tokyo only. Second because theres no fun in a happy family where everybody loves each other so you wont never see a video or a show about that. Its only fun show how people cheat and do dirty stuff outside the marriage.
For gods sake, stop seeing japan as a place where marriage has no value, because they're exactly like the rest of the world. They cheat as much as a french, brazillian or american would do. And ntr its popular there because inferiority complex its common there and ntr its appealing to these people for some reason. Dont judge a country by its porn, for gods sake.