Release rule
How to Book Umi: Reservation Release Day, Phone and Rules (2026)
海味 · Gaienmae (Aoyama), Tokyo · Sushi · Lunch & dinner
How to book this house
Book online on Ikyu (the official site's own link) or Tabelog, or call in Japanese — each date opens two months ahead to the day. Nine seats, two dinner seatings, closed Wednesdays and holidays; cancellations only by phone in business hours.
- Next release
- Open now for visits through December 20, 2026
Source last confirmed Mar 2025; treat the date as an estimate
- Lunch / dinner
- Lunch & dinner
- Phone line
- 03-3401-3368, Japanese, during service; lunch Tue, Fri–Sun 12:00, dinner seatings 17:00 and 20:00; closed Wed and holidays
- If a seat comes back
- We watch this house's own booking page and email anyone following it when dates appear that were not there before. We hold nothing — the seats go first come, first served.
Trained here
- 中野屋 · NakanoyaHara, Nagano
- すし 田いら · Sushi TairaMoto-Azabu, Tokyo
- 名山 きみや · Meizan KimiyaMeizan-cho, Kagoshima
From the same family
- 在掌 · ZaishoNishinakasu, Fukuoka
- 我逢人 · GahoujinNishi-Nakasu, Fukuoka
About this house
Nine counter seats, two dinner seatings. Each date opens two months ahead; the official site sends bookings to Ikyu and Tabelog also lists seats, so try online before the redial.
Read more
Cancellations only by phone during business hours.
Allergies or dietary needs? Make a Japanese dining card →
Next release days
Last verified March 19, 2025 · checked by our desk October 4, 2026
Source for the booking rule: a published guide (pecotter.jp), read March 19, 2025.
All times are Japan Standard Time (UTC+9).
When does Umi open its reservation book?
Book online on Ikyu (the official site's own link) or Tabelog, or call in Japanese — each date opens two months ahead to the day. Nine seats, two dinner seatings, closed Wednesdays and holidays; cancellations only by phone in business hours. Open now for visits through December 20, 2026 All times are Japan Standard Time (UTC+9).
How do I book Umi from abroad?
Umi takes reservations online through Ikyu and Tabelog, which you can use from abroad with your own account and a credit card. If you would rather not, our Tokyo desk can request it for you: ¥12,000 per seat, charged only if the table is secured. A free release-date alert emails you the day before, on the morning of release day (08:00 JST) and about 30 minutes before when the opening time is known; houses that open a little every day come in a weekly summary.
What time zone is the release time?
All times are Japan Standard Time (UTC+9). Release days are computed from the house's published rule and re-checked monthly.
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- KizanNihonbashi-Muromachi, Tokyo
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← All 1,504 houses in the booking calendar
Rules are verified against official notices and platform listings and re-checked monthly. Houses change their systems without warning; treat the calendar as a planning tool. For restaurants in our collection, our desk confirms the specifics for your dates when you request.