Under the train – under the train♪wow I am not Sebastian @The Little Mermaid, but you might drink like a fish @ under the train tracks between Shinbashi station and Yurakucho station.
Many guidebooks mention that there are so many taverns under the train tracks at the center of Tokyo. Just one stop from Tokyo station or you can just walk along under the JR railroad from Tokyo toward Shinbashi area for a walk.
You can easily find very smokey, sparkle area by Shinbashi,Yurakucho stations.
It seems, as it were, an oasis for Japanese business men after daily hard work, those taverns are like pubs in England. Besides, Japanese taverns under the train tracks are cheaper than other restaurants around the flamboyant area of Tokyo station. You can just have a drink and order small snacks (otsumamis )& go home is OK without paying gratuities but covering what your had only.
Menu + Price tags at the edge of the eaves 
Japanese typical taverns
Many people come together here with their colleagues or friends, some people just stop by here alone to have a drink after work. Some taverns keep old-fashioned style – to hang price tags at the edge of the eaves for taking the place of the grand menu.
You can make an order just read those price tags or, ask waiter or waitress to have today’s “Omakase” or find out a menu by a table. Prices are rather cheap because taverns are under the train tracks. Sometimes sounds of train running very noisy but I am sure that you will enjoy the atmosphere and foods & drinks there!
Even though -smoke gets in your eyes – don’t worry, your friends or companies can’t see through your oriental flush and smokey red eyes after getting drunk behind the smoke. Have a good time @ smokey taverns and enjoy Tokyo evening!