Branches around Tokyo
http://www.taimeiken.co.jp
Prices: Inexpensive
Serving Yoshoku (Japanese style Western Food)
Any of these places are good to have a quick bite. There is the main store and in addition many satellite branches around Tokyo (go to website for addresses).
Hayashi rice, hamburger steak, omu-raisu (rice filled omelettes) are a few of their specialties.