The barrier made of netting is meant to measure 2.5m by 20m and the requisite poles have been in place since early May.
Lawson issued a statement on Sunday to “deeply apologise to the local residents, store customers, and the many other people who have been inconvenienced and troubled” by the popularity of the vantage point.
The convenience store chain said it had “dispatched staff from Lawson headquarters” and “put up signs, in multiple languages, stating that crossing the street in front of the store is prohibited.”
It is also considering deploy private security staff.
Record numbers of overseas tourists are travelling to Japan, where monthly visitors exceeded three million in March for the first time.
But as in other tourist hotspots, this has not been universally welcomed. In Kyoto, locals have complained of tourists harassing the city’s famed geisha.
Meanwhile, hikers using the most popular route to climb Mount Fuji this summer will be charged US$13 each, with numbers capped to ease congestion and improve safety.