Can a tourist visa to Japan provide proof of parents' income? But I don't have my parents' account, okay?

You can do it once. According to the regulations of the Japanese Consulate, the annual income of the applicant or second-generation relatives is more than 6,543,800 yuan. Under normal circumstances, unmarried people are registered with their parents, and a copy of the household registration book is enough. But as long as you can submit your one-child certificate or your medical birth certificate after marriage. If you don't have these, you need to provide a certificate of kinship between you and your parents (go to the notary office). Of course, there is a premise that you and your parents are in the same consular district. You can't say that you are in Beijing, your parents are in Guangzhou, Shanghai or something, and they are not consular areas.

Many times, if you go to Japan with your parents under the premise of the same consular district, your father or mother is the main applicant, and you can be the deputy applicant.