265 degrees magnetic should do it, though I think you must have been very lost not to see Mt Fuji. It is rathe obvious, from a long way off. 
Edit: If you were going northeast, it isn’t surprising you missed it though. I suspect you were heading for Fujioka instead.
I wouldn’t be too embarrassed about it though: plenty of real-life pilots have misread maps and compasses. There was even some guy who claimed to have got his east and west confused, and accidently crossed the Atlantic…