Can I marry a local boyfriend (Japanese) when I come to Japan on a short-term business visa (15 days)?

Embassy Marriage Registration The China Embassy only accepts applications for marriage registration from Japanese citizens who have legally resided in Japan for more than six months. Both men and women who want to get married must go through the marriage registration formalities at the embassy in person. Only a man who is not less than 22 years old and a woman who is not less than 20 years old can register for marriage at the embassy. The Embassy of China does not accept applications for marriage registration where one party is a foreign citizen. Please go through the relevant formalities at the Japanese city or regional service office. If both parties to a marriage registered in a Japanese city or regional service office are citizens of China, they can also register their marriage with the relevant Japanese authorities. The parties can apply for a marriage certificate at the embassy first. China citizens who have returned to China for marriage registration shall go through the marriage registration formalities when they return to China. Please notarize the declaration of no spouse at the embassy first. Japanese nationals go to China to register for marriage. Japanese Chinese or Japanese intend to go to China for marriage registration. Their proof of marital status must be certified by the Japanese Ministry of Foreign Affairs and the Embassy of China. The embassies of People's Republic of China (PRC) and China in Japan reserve all rights?