Fifty Days of Aged Marlin at an Eight-Seat Counter in Setagaya
Koji Kimura ages his fish for weeks — his striped marlin for fifty days — at a small counter twenty minutes outside central Tokyo. The room seats eight. Booking is its own project.
The striped marlin has been in the aging fridge for fifty days by the time it reaches the rice. It is darker than fresh fish, the flesh gone almost mahogany at the edges, and when it hits the palate it does something that fresh marlin does not do: it tastes of itself, concentrated, with a savory push that most sushi counters have trained diners not to expect. Koji Kimura has been calibrating this technique for years, and the counter he built to serve it seats eight people in a residential pocket of Futako-Tamagawa, twenty minutes and a Denentoshi Line ride from where most visitors think Tokyo sushi lives.
Kimura opened this room in 2018 after decades of working out how long different fish will hold and improve. He is called the father of aged sushi by people who care about the taxonomy, and the room reflects the sensibility — laid-back rather than reverent, Kimura himself warm and talkative across the counter, the menu dictated by season and aging schedule rather than by what a diner might want to see. No fatty tuna in the wrong month. No uni for the sake of it.
The fifty-day marlin is the argument for aged sushi, and one bite of it makes the case the entire room was built to make.
Editorial Deep
The otsumami arrive before the nigiri and they are not warm-up acts. The kuro awabi risotto is abalone chopped into the rice with its own liver folded through, dense and briny and closer in weight to a main course than to an opener. The uni soba lands with sea urchin draped over cold noodles in a quantity that would be showing off if the balance did not work. The brandy-marinated watari kani reads as the most conceptual thing on the plate and is the one Kimura talks through in the most detail — blue crab with the shellfish sweetness pulled forward by the spirit, cold, spoon-eaten.
Conversation runs easily at a normal volume. Kimura talks across the counter through most of the meal, other diners join in when they want to, and there is none of the enforced hush that some top-tier sushi rooms trade in. Eight seats along a wooden counter, the chef's sightline covering all of them, the pace set by his hands rather than by a timer.
The booking is advertised as a reservation you make about a month ahead through a platform of your choice. In practice it behaves like several different reservations at several different prices, and the one you end up with depends on which door you walk through. The direct phone line (03-3707-6355) is the cleanest route if a Japanese-speaking concierge can make the call.
The cheapest visit that still counts as eating well here is a Wednesday or Sunday lunch booked through JPNEAZY, which buys the same omakase Kimura serves at dinner. That is the version to send a friend to. It is also the version most visitors will not book, because they will land on a pricier concierge quote and assume that is the price of the room. It is not — it is the price of the booking channel.
The condition currently unmet is a repeat visit in a different season. The fifty-day marlin is the anchor and it sits on the counter year-round, but the shiromi, the shellfish and the otsumami rotate hard, and the room reveals itself across two or three visits in a way it does not across one. Winter for the shellfish. Late spring for the white fish at their aging peak.
What to eat
Don't miss.
The chef sets the omakase — the fifty-day makajiki is the piece the counter was built to serve
“Go for the aged marlin, book through JPNEAZY, and treat the concierge quote as a separate restaurant.”
The aged-sushi argument is Kimura's, and no one else in Tokyo is making it at this level. If the platforms are gone and the phone line is not an option, Amamoto in Shirokane is the classical Edomae counter to redirect to — a different format, at higher money, but a bookable seat with a serious kitchen behind it.
The Verdict
