Therefore, this does not exist. There is interest on the loan from the bank, but the price of the house has nothing to do with the bank. Even if the money is repaid in advance, it can only be said that there is no need to pay the subsequent interest, and the bank has no loss in the amount. But from the monetary point of view, if the currency depreciates rapidly and you repay in advance, then you earn. Because other items have gone up in price, the money is cheap.
Maybe at that time, you only need to pay the mortgage with one bill (as shown below), and maybe the bank will give you change. But in those days, there was no job security and no hope for life. It's terrible to think about it, so forget it!
Some people say that Japanese children are not allowed to watch cartoons exported to foreign countries in order to poison children in China. Is it