“Unfortunately, as our restaurant can only seat up to 10 guests at a time, this situation is likely to continue,” it says.
The restaurant is run by sushi maestro Jiro Ono, well into his 90s, helped by his eldest son Yoshikazu.
Another branch, run by his younger son and located in the modern Roppongi Hills complex, kept its two stars as it is open to public reservations.
The main, basement restaurant opened its doors in 1965 and has remained in an ageing commercial building in a corner of the Ginza district ever since.
When then US President Barack Obama travelled to Tokyo in 2014, he joined a long list of Ono’s celebrity guests, including French master chef Joel Robuchon and Hollywood stars Hugh Jackman and Katy Perry.
As Obama and Abe thrashed out trade talks, Ono senior served them his own selection of 20 pieces as he does to every diner, according to son Yoshikazu.
“He (Obama) seemed to like chu-toro (medium fatty tuna) very much because he winked when he ate it,” he said.
The son said the president had eaten them all and praised the way he skillfully handled the delicacies.
“He said three times, ‘This is the best sushi I’ve ever had in my life’,” he added.