That game is easy I have no money problem
The save files seem to have some hash checks, one of the lines looks suspicious to me. I tried to edit Yen and of course got a failure back. I even tried editing with the debugger, got a lot of weird results back. The values are dynamic and there seems to be some memory that the debugger is not hitting. They've got some anti-cheat on this one. Will wait for the OP to do his thing.