Best Seats to View Mount Fuji Train Seat Guide
So, here it is. In a regular car, there are five seats across, three on one side and two on the other. The side with two seats is the Mount Fuji side. And seat E is the closest to the window, and D is the aisle seat right next to it. On the green cars, which are first class, there are only four seats. Here, seat D is the window seat looking at Fuji, and C is the seat right next to it. So, if you’re two people, you want either seats E and D in the regular cars or seats D and C in the green cars. It’s as simple as that.

AloJapan.com