Release rule

How to Book Osamu-chan: Reservation Release Day, Phone and Rules (2026)

生ホルモン処 おさむちゃん。 · Sakai, Osaka · Yakiniku · Dinner only

How to book this house

Reservation-only counter of eight that now takes regulars and their introductions; new guests effectively cannot book. (Until around 2021 the book opened on the first business day for three months ahead.)

Introduction only — follow and we tell you if it ever opens to new guests.

Where bookings are taken
Introduction only
Lunch / dinner
Dinner only

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

Phone line
080-5322-0036 (regulars only)
If a seat comes back

There is no public booking line: the seats go to regulars and their guests.

Allergies or dietary needs? Make a Japanese dining card →

Next release days

Introduction only

Last verified September 23, 2026 · checked by our desk October 4, 2026

Source for the booking rule: a published guide (pecotter.jp), read April 16, 2021.

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

More houses in Sakai, Osaka

More Yakiniku in the same region

All houses in Kansai →

When does Osamu-chan open its reservation book?

Reservation-only counter of eight that now takes regulars and their introductions; new guests effectively cannot book. (Until around 2021 the book opened on the first business day for three months ahead.) All times are Japan Standard Time (UTC+9).

How do I book Osamu-chan from abroad?

Osamu-chan cannot be booked without an introduction from an existing guest; there is no public reservation book.

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 Kansai

Kansai: when hard-to-book restaurants open reservations →

← All 1,240 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.