Below are some Amazon Japan links to a couple of books of the manga version of the animation.
ダーリンは外国人―外国人の彼と結婚したら、どーなるの?ルポ。

How would the Japanese like it, if North American or European trains showed animation of stupid buck-toothed Japanese men with small penises? No wait, that would be illegally there, since unlike Japan, those countries have actually anti-discrimination laws which they enforce.