The shop is run by Kazuyuki Suzuki, 54, who restocks the lunches by monitoring sales from his home-kitchen next door. He can tell when a group of visitors or cars have arrived from their sounds, and he cooks accordingly. Suzuki offers about 100 lunches on weekdays, and about 250 on holidays with help from a part-timer. His parents opened the shop in 1972. At that time, machines selling udon and soba noodles were also available, but they broke down one by one. The bento machine remained. It is believed to be secondhand, and Suzuki does not know how old it is. Whenever problems arise, he asks an acquaintance familiar with vending machines to fix it. The machine does not display product samples and instead shows handwritten signs for the menu. Many notes with instructions are pasted on the machine saying, for example, "500-yen coins cannot be used." Another note says: "The sold-out lamp does not work, so if nothing comes out after pressing the button, please make a different selection."