My partner works in Japan and has no time to come back. I want to get a tourist visa to visit him. Can I get a tourist visa to marry him in Japan?

No, visa and marriage are two different things.

Because you are all Japanese nationals, you must get married according to the regulations of China. The Chinese embassy in Japan can accept marriage temporarily, but the formal marriage certificate is only valid when you return to China.

Therefore, your partner must go back to China once, to the place where he registered to get married. Just get a marriage certificate and go back to Japan.

After he wants to go back to Japan, you should apply for a visa for his family to stay in China. Some documents need to be sent back to you from Japan.

Besides, in your case, he stayed in Japan for a long time, only went back to China once, went through the formalities and left immediately. Japan's Immigration Bureau will definitely wonder if he is really married. Relevant supporting documents should be submitted when applying. You were friends.

These objects are all in Japan, so you can consult with the Japanese Immigration Bureau. You will get a detailed explanation.