Late August — and still hot. This is exactly the season for a noryokai, Japan's "beat-the-heat" party.
Ou Banquet offers several banquet courses with all-you-can-drink. Here is a quick guide for party organizers.

Keep it casual: Trial Course + All-You-Can-Drink

A sashimi platter of Tohoku-direct fish, Gen-Tare stir-fry and more for 6,000 yen (tax incl.).
Just the right volume for a first office gathering or a budget-friendly summer party. With premium all-you-can-drink: 7,000 yen.

For maximum atmosphere: Ou Blessings Course + All-You-Can-Drink

A 5-kind sashimi platter plus hamayaki seafood grilled at your table and kamameshi pot rice, for 8,000 yen (9,000 yen with premium drinks).
The sizzle of the grill warms up any party on its own.

Notes for organizers

All plans serve 2-20 guests; reservations close at 11:00 p.m. the day before your visit.
All-you-can-drink courses run two hours. Headcount changes and budget questions are always welcome.