Flash Reserve －瞬約－

A1.

Flash Reserve —瞬約 is a notification service. When availability such as cancellations appears at selected restaurants, we retrieve that information as quickly as possible and notify members. We do not provide reservation agency services, and we do not perform automatic bookings.

A2.

In the world of hard-to-book restaurants, the first point of separation is whether you can know the exact moment a slot becomes available.

What Flash Reserve – Shunyaku aims to achieve is putting you in a position where you can make reservations under your own name.

You reserve under your own name, are welcomed under your own name, and build a relationship with the restaurant over time.

To stand at that starting point, you must first gain the position where you can make reservations yourself.

Flash Reserve – Shunyaku was created to make that very first step possible.

A3.

For first-time members only, we offer a 48h trial period so you can confirm speed and experience.

“Effective June 2026, our trial service has been discontinued as membership capacity has been reached.

A4.

After the trial period ends, we will send you a follow-up email.

If you are satisfied with the service, please proceed with your membership registration.

A5.

When availability (such as cancellations) appears at selected restaurants, you will receive notifications based on your settings at signup.
Notifications include the restaurant name and information needed to access the reservation page (the displayed items may change for operational reasons).

A6.

The key difference is speed.

LINE notifications are delivered almost in real time—within approximately 0 to 3 seconds after a cancellation occurs.

MAIL notifications, on the other hand, typically arrive with a delay of around 15 to 30 seconds due to network conditions and email server processing.

At hard-to-book restaurants, cancellation slots are often taken within seconds.

That’s why the speed of notification directly determines your chances of securing a reservation.

If you want the highest possible chance, we recommend using LINE notifications.

A7.

Plans differ based on the number of restaurants you choose to receive notifications for.

Within your selected plan, there is no limit on the number of notifications you will receive.

For detailed pricing information, please refer to the page below.

View Plans

A8.

As this is the point our valued members are most interested in, we have provided the cancellation slot occurrence status for the past two months (by restaurant) in a separate table on the page below.

selected restaurant

A9.

You can do this at any time from your member page (My Page).

A10.

Bundled Restaurants are a subset of the Target Restaurants that are automatically included as notification targets from the time of application, separate from the restaurants selected by the member under their chosen plan.A list of attached stores can be found on the following page.

Bundled Restaurants

A11.

Information on cancellation slot occurrences by restaurant over the past few months is provided on a separate page below.

Please refer to it when selecting restaurants to register.

Cancellation Notifications

A12.

To make reservations, you must register and prepare to log in to external reservation services such as omakase / TableCheck on your own.

A13.

No. Results vary due to external factors such as seat count, popularity, and simultaneous access by others.
What Flash Reserve —瞬約 provides is not a booking guarantee, but informational advantage and the right to choose.

A14.

You can complete the procedure from your member page (My Page).

A15.

The inquiry desk is operated by the Flash Reserve – Shunyaku Website Operations Office.

Inquiries are accepted via the email address listed on our website.