Is there a minimum income that a sponsor who lives in Japan must be earning in order to pledge support?
An annual net income of 8,000,000 JPY is the absolute minimum. However, the number of your family members, the age of the sponsor, his/her legal status etc. will also be taken in account to see whether it is possible for him/her to provide financial support for you. (approx 2,000,000 JPY/year)