Hatou is where Tokyo's most decorated kaiseki family went to make sushi. The Ishikawa group — Kagurazaka Ishikawa, Kohaku and Ren, each holding three Michelin stars — opened it in February 2020 under Taiji Kumakiri, a Shizuoka-born chef who had spent eleven years inside those kitchens before going to learn Edomae nigiri at Higashi-Azabu Amamoto. The result is a counter that reads as kappo (割烹 — chef's cooking served across the counter) for its first half and as a sushi-ya for its second, and the guides noticed at once: a Michelin star in its first year (2021), then Tabelog Award bronze in 2025 and silver in 2026. The name means "great waves" — small ripples, the house says, gathering into something larger.
One geographic note, because overseas searches often get it wrong: Hatou is not in Ginza. It has always been in Kagurazaka, and has recently moved within the neighborhood to the NEO Kagurazaka building at Kagurazaka 6-21, a few minutes' walk from Kagurazaka and Ushigome-Kagurazaka stations.
The exact system
- Reservations run through the Japanese OMAKASE platform and Ikyu.
- The book opens on the 1st of each month for dates through the end of the following month — a rolling window of roughly four to eight weeks.
- Eight counter seats. Dinner Tuesday to Friday from 17:00; Saturday adds a lunch service from 12:00. Closed Sundays, Mondays and public holidays.
- Platforms list the course from roughly ¥35,000–50,000 per person before drinks, plus 10% service.
- Cancellation terms bite early on platform bookings — a small fee from the moment of confirmation, rising to 50% the day before and 100% on the day — so book only dates you will keep. Our guide to Japanese cancellation policies explains how this is normal here.
- No children; non-smoking.
Eight seats, five dinner nights and one Saturday lunch a week is a small arithmetic, and release day settles most of it. But unlike the introduction-only rooms, every Hatou seat passes through a public platform — the barrier is timing, not membership.
Your realistic odds
- Be awake on the 1st, Japan time. The window opens for two months at once; take a midweek date in your travel window rather than hunting a Saturday.
- Saturday lunch is the quiet door. Fewer people plan sushi at noon; the same eight seats are on offer.
- Watch cancellations. With weeks between booking and dinner, plans change, and released seats reappear on the platforms at random hours, Japan time.
- Check both platforms. OMAKASE and Ikyu do not always mirror each other in real time.
If the 1st doesn't break your way
The Ishikawa family's own release schedules — for the three-star houses themselves — are among Tokyo's most winnable for a prepared visitor, and Kagurazaka's lanes reward the evening either way. Our desk watches OMAKASE and Ikyu at Japan hours, catches the cancellations, and confirms only what the house confirms. Put your dates on the request form — no seat, no fee — and the collection holds the counters beyond the platforms' reach.
