Can a former overstayer be my financial supporter when applying to COE

I have been accepted into a Japanese national university with a scholarship and am currently applying for my Certificate of Eligibility (COE). My father is acting as my financial supporter. However, he previously overstayed his visa in Japan for two years back in 2003. While all other required financial and employment documents are prepared, I am concerned about his past status. How might my father’s previous overstay affect the outcome of my COE application?

by Training-Theory4947