This is the Okubo Dango in Shirokane, Minato-ku, Tokyo. An old-established japanese sweets shop that look reminds me when I was a child. They also sell homemade sweets like Kintsuba other than Ama-Dango. And then you can also enjoy Ice ball with flavored syrups as strawberry, water-meron, lemon and so and so during summer. It will take you 10 minutes by bus bound for Tamachi station from Ebisu station. I think getting off at Ebisu-san-chome bus stop is convenient.