COE Application requirements

Hello everyone,

I am an incoming student to Japan this September and I have a few questions regarding the financial sponsorship requirements for the COE/visa application process. I would greatly appreciate any insights or experiences you can share.

1. Financial Sponsors' Income:
   I have two financial sponsors: my brother and my uncle. Both have an annual income exceeding 1.2 million JPY. Is this amount generally considered sufficient for the COE/visa process?

2. Savings Documentation:
   Can my sponsors show fixed deposits (FD) as proof of savings, or is it mandatory to demonstrate the required amount in cash within their bank accounts?

3. Recent Account Deposits:
   For COE/visa purposes, my sponsor recently added a lump sum of money to their account. My intake is in September, which gives us around 2.5 months from now. Could this recent addition of funds potentially cause any issues during the visa application process?

Thank you in advance for your help. Your advice and experiences will be extremely valuable to me as I navigate this process.