Do the Japanese value bloodline?

Don't pay attention. Japan attaches importance to surnames, but not to blood or lineage. Japan's hierarchy has always been very strict, but when participating in the hierarchy, it is based on family, not blood. For a long time, the consanguinity of Japanese families has been a mess. There are all cats and dogs, but the surname remains the same. This is because adoption is very popular in Japan. No matter what your previous status is, as long as you adopt it and inherit your surname, you are a direct descendant of your family. The eagle family was cut off three times; The Orange family broke off contact twice, and later the Nong Xin Lu Xiao family became the heirs of the Orange family. The Tokugawa family frequently appears small families and large families, and even allows grandchildren or adopted sons to continue; The royal lineage has also changed several times. As for the internal marriage of the royal family, it was the old Huang calendar of the ancient grave era; Shangshan family moved from Kakuji Temple in the north of Fujiwara to Changwei family in Bandongping (Shangshan Hu Hui), and then moved to Qiuyue family in the Eastern Han Dynasty (Shang Xi 'an, Shan Zhi). Fujiwara's son, Fujiwara Tadashi's son, was also adopted, which was the basic experience of Qian Yue Zhao Xuan Fujiwara. If you really value bloodline, even if these famous families cut him off, they will not introduce other bloodlines.