Food glorious food. Most stations sell all sorts of food from bright kiosks and vending machines.
In the Koyasan Monastery we were fed fine vegetarian food to our room.
Okonomiyake are rich omelettes made with vegetables (or fish and meat) at your table. You order the ingredients and then mix them up and cook them on the big hot plate in front of you. After a few minutes and few deft flips with the supplied spatula, you eat!
Of course there are fast foods too. Including the rice burger from Mos Burger.