You went to the shop's old location. Yes, the old building is still vacant and the shop's name is still there. Very confusing indeed. The new location is here: Scenario Kaikan (name of building) Floor B1 5-4-16 Akasaka Minato-ku, Tokyo and here is a Google maps street view link. https://maps.google.com/maps?q=Akasaka,+Minato,+Tokyo,+Japan&hl=en&ll=35.670951,139.735022&spn=0.0031,0.004823&sll=38.341656,-95.712891&sspn=34.447337,79.013672&oq=akas&t=h&hnear=Akasaka,+Minato,+Tokyo,+Japan&z=18&layer=c&cbll=35.671002,139.735074&panoid=rcn3U56tTj2SwuR-5mFRcQ&cbp=12,301.46,,0,11.52 The new location is hard to find because Kobachiya has no real clear sign. Ive complained to the owner about it. For sure they are open for lunches and dinners Monday thru Friday. Sundays and Holidays they are definitely closed. Ill check about Saturdays. I believe they are closed on Saturdays but will double check.