Japan's work visa, now qualified, what should I do next?

Take the residence certificate and passport to the agency designated by the Japanese consulate under your jurisdiction to apply for a visa. Japanese consulates do not accept individual applications, they must go through their designated institutions. The agency information is clearly written on the consulate website, which can be confirmed. By the way, many people misunderstand that visas are handled at the embassy, which is completely wrong. The embassy is the place where diplomats are located, and the specific business such as visas is handled at the consulate instead of the embassy.