One of the best bites I have had in a while is this seasonal vegetable tart at the #ImperialHotel bakery #Gargantua. Perfectly sliced squashes in gorgeous circles over an herbaceous base. The ham and cheese bun was also amazing.
There is a small eat-in area in the popular bakery.
The Imperial Hotel is near Yurakucho Station
Gargantua Bakery
Food Sake Tokyo 
my goodness, that tart is something out of a comic book or cartoon. Amazingly created