Almost all restaurants have a special lunch menu.
Especially places like yakiniku or shabu-shabu, which can be around 3000 yen for dinner, can be enjoyed for a third of that at lunch time!
There are fewer options but the price is dirt cheap.
Often 500 yen to 1000 yen for salad, main, soup and a drink.
Even expensive restaurants have these cheaper meals – so if you want to eat out in Japan, lunch is the time for you.