Even if you incorporate a company in Japan, it does not secure your company can open bank account.
In order to open bank account under the name of company, you need to prove that there is substance of company.
In the case your company operates business in Japan, it will enter into contract with other company.
On this documents, other company will put its seal.
In the case your company purchases items, it will receive bill from other company.
On the bill, other company will put its seal.
In order to open bank account, your company needs to prepare this kind of document.
So, in the case you incorporate a company, if employee of bank regards your company is just bogus company, it can not open bank account.