I like this kind of school curriculum, but why is it introduced only in Japan? It is worth introducing such a lesson into the school curriculum of every Asian country, and the first thing to do is to start with South Korea, judge for yourself, they have a birth rate of about 0.5 children per woman, and if Korean schoolgirls give birth to at least 2 children from white gentlemen, thanks to such a school curriculum, then Korea will soon be bleached!