Looks like 7-Eleven have realized that NEWDAYS, the Japan Railway in-station convenience stores that grew out of small kiosk shops, have been gaining ground in the competitive convenience store market. NEWDAYS have been popping up everywhere at stations in central Tokyo. I have also seen a few stores outside of the main station building in a sign they may go mainstream on the streets as well.
7-Eleven has recently started to open stores teaming up with the Keikyu Railway. If you take a trip out to Haneda you can see one of the new stores at the station there.
Have you used a NEWDAYS convenience store? How do you feel they compare to Lawson, 7-Eleven or Family Mart? Do they have convenience stores like Lawson inside stations in your part of the world?