Ito-Yokado bought out 7-11, they were previously running the Japanese franchise, they also run supermarkets in Japan. But yes, the US 7-11s are now owned by a Japanese company.
It's not a lot, but a few items like having fresh ground coffee is a welcome sight when traveling as opposed to warmers of coffee prepared by someone who doesn't care that likely have been sitting for hours.
I’m really curious to understand how the relationship works though. And wonder if the US operations are largely independent or not.
Corporate 7-11 is owned by a Japanese company, most 7-11s in the states are franchises owned very locally.