Why is this happening? There are historical reasons.
Wedding visits to relatives were popular in Japanese history for a long time, until the end of Edo period and even the early Meiji period (19). How far can a man go to visit a woman at night in the era of visiting his wife and marriage? If it weren't for hunting, when they settled down, they would wander about 30 miles in Fiona Fang at night. Therefore, consanguineous marriage is very inevitable. From the emperor to the common people, marriages between half-brothers and sisters are even very frequent, which can be seen in Historical Records. Even marriages with mothers, brothers and sisters have happened.
In short, they married a wide range of people. Even if a son visits his mother's village or tribe, his other wives or half-sisters will not be blamed except his mother, because there is no such moral constraint on him.
At that time, half-brothers and sisters were able to get married naturally or * * * because they didn't live in the same family. Their awareness of close relatives was very weak or even lacking, and there was no concept of relatives. Fathers are usually uncertain and the family system is not perfect.
There are many records about the consanguineous marriage of Japanese royal family in ancient records. If this book is a historical classic, it can only be regarded as the love history of royalty. Judging from the numerous love songs processed and decorated by later generations, the royal family likes to fall in love in this way. As for the general Japanese people, they must be more bold and indulgent.
Despite this custom, with the development of history, consanguineous marriage and consanguinity are increasingly prohibited, and taboos are becoming stricter and wider. In contrast, the Japanese royal family is slower than ordinary people in this respect. The Japanese royal family, like a few other royal families in the world (such as ancient Egypt), spared no effort to prevent civilians from desecrating royal blood. The bottom line of taboo is half-brother marriage, and the others are still very ambiguous.
In Japan, there are relatively many complicated relationships among family members. Nanbo, a famous Japanese sociologist, said that there have been many records about mothers, sons, brothers and sisters in Japan since ancient times. Although under the influence of foreign ethics, this is obviously regarded as a felony.
"In modern times, the sense of connection between mother and child is increasing day by day, and Japanese mothers can think that they can meet their son's physiological needs for preparing for the college entrance examination" or "When Japanese mothers are dissatisfied with their husbands or want to suppress * * * from other women, especially those who hinder their son's study, there will be a mother-child relationship."