I love Tanpopo Noodle Shop. Just a little under half of their menu is vegan and or veganizable. One can substitute mushroom broth for the soup and the mushrooms they use in the cooking are always fresh and delectable. The Sake, Beer and Wine combined with the quiet atmosphere make Tanpopo a great place to bring a date or spend an evening alone if one can't get a date.
If one is going to get a bowl of soup they should plan on taking some of it to go. It is more filling than one would think. DO NOT put the to-go container in a backpack and then operate a bicycle because upon arrival at home one will open their backpack to reveal grand dreams crushed into a noodly, steamy, mess. Who knows, they might even ruin a German textbook or two.