Release rule

How to Book Koise: Reservation Release Day, Phone and Rules (2026)

こい勢 · Aioi-cho, Sakata · Sushi · Lunch & dinner

How to book this house

Book by phone; banquets require a reservation. Lunch and dinner Wednesday to Sunday, closed Mondays and one Tuesday a month.

Next release
No release day — book any time

This house books only by phone, in Japanese. Our Tokyo desk can make the call on release day: ¥12,000 per seat, only if we secure it. Ask the desk →

Where bookings are taken
Phone only
Lunch / dinner
Lunch & dinner

From the house's hours on Tabelog (checked October 2026).

Phone line
0234-24-1741 (Japanese)
If a seat comes back

This house takes bookings only by phone, so there is no online vacancy alert.

About this house

Sushi house five minutes' walk from Sakata Station; 15 counter seats on the ground floor and banquet rooms upstairs for up to 20; cash only (no cards or e-money). Tabelog Sushi EAST 100 (2025).

Booking details

How the book opens

Reservations by phone (required for banquets); how far ahead dates open is not published — diners report booking from the same morning to several months ahead

Exceptions and seasons

Lunch 11:30 (11:00 on weekends and holidays) to 14:00 and dinner 17:00 to 21:00; closed Mondays (Tuesday when Monday is a holiday) and one Tuesday a month.

Allergies or dietary needs? Make a Japanese dining card →

Next release days

No release day — book any time

Last verified October 18, 2026

Source for the booking rule: Tabelog, read October 18, 2026.

All times are Japan Standard Time (UTC+9).

More Sushi in the same region

All houses in Hokkaidō & Tōhoku →

When does Koise open its reservation book?

Book by phone; banquets require a reservation. Lunch and dinner Wednesday to Sunday, closed Mondays and one Tuesday a month. All times are Japan Standard Time (UTC+9).

How do I book Koise from abroad?

Koise takes reservations by phone in Japanese only. Phone line: 0234-24-1741 (Japanese). From abroad, either call at those hours or have a Japanese speaker call for you. 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.

More release days in Hokkaido & Tohoku

Hokkaido & Tohoku: when hard-to-book restaurants open reservations →

Request this table — our Tokyo desk calls in Japanese on release day · ¥12,000 per seat, only if secured →

← All 1,544 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.