Yesterday, I finally
made had the lunch at ThankYou (more formally in Japanese Kanji “山久”) in Jiyugaoka. There are only 12 seats available in ThankYou restaurant and they don’t accept the reservation except for denner dinner (sorry for typo, sounded like tohoku ben); so the only way to enjoy ThankYou lunch @JPY 1,100 (=about $10) is to go check it. It is the combination of soba and nice Japanese dishes. It is a few blocks from Jiyugaoka station (Google Map), one of my favorite towns in Tokyo. Incidentally one of my maimiku runs ThankYou community at mixi.
Update: ThankYou now moved to the place next to another famous Hanakya (Haya Cabbage).