Lorena and I have been partial to Oga's in Natick for over ten years whenever we need our Japanese food pick, but driving from the West we had also noticed Aoi. So even we were surprised that we decided to do lunch there after living in this area for so long. It is small but decorated more like a real Japanese restaurant in Japan. The food was also more authentic as you can see from the pictures below of vegetarian udon and tempura udon. The dishes definitely look beautiful and tasted pretty good as well. They were not full of fat or strong flavors. It reminded me of my time living in Japan. A lot pricier than Oga's but definitely worth going once in a while.
