I found your blog looking for photos of a coffeeshop I visited a couple of times in Tokyo (Akihabara I think) that had a long counter on the right as you walk in with several baristas making vacuum pot coffee. The pots were lab-looking creations mounted over Bunsen burners. Each pot made a single cup of coffee and there were at least 10 of them just behind a glass protective wall. It was so fascinating to watch the fire, water and glass.
I think (it’s been 12 years since I lived there) that the shop was “near” Tony Roma’s and I’m pretty sure it was a Gaijin-trap.
That description doesn’t ring a bell with me. Such siphon brew coffeeshops have been disappearing over the last ten years since starbucks started taking over Tokyo streets. I know several Tony Roma restaurants, but none have such a coffee shop nearby. Akihabara has been totally refitted around the station and I’ve not seen a Tony Roma’s joint anywhere. If you remember any more details about the place, let me know and I’ll try to scout out the location.