Maisen
http://mai-sen.com/sp/restaurant/aoyama/index.html
This is one of most pupular restaurants at Omotesando St. There are always customers, waiting in a line to have a sheet. I often hear foreign languages here, English, Chinese, Korean and I see young, aged, men, and women. The all stuffs works efficiently and that makes us feel good, even though we wait for a seat!