I admire the reporter's resolve to personally investigate this story for us. It's at Volks.

"Between 2 and 7 p.m., 100 yen will get you 10 minutes of all-you-can-drink alcoholic beverages, with 10 minute extensions costing an additional 100 yen each. The menu for the deal includes Asashi Super Dry draft beer (in large, medium, or small glasses), whisky highballs, shochu, shochu sour cocktails (lemon and grapefruit flavors), plum wine cocktails, and finally, red or white wine (in glasses or decanters)."

https://www.japantoday.com/category/...arting-at-y100