7-11 in Japan is a way of life.
I've been to an American 7-11 once or twice in my life. (I didn't want to go back.)
In Japan, I went at least once daily - sometimes twice per day. They almost function the role of a NYC bodega, but with more and fresher food options. In addition, they often have a stack of microwaves run by the staff, allowing for inexpensive, fresh, and warm meals.