The food here is really authentic, fresh and delicious. The portions aren't huge but everything is freshly prepared in front of you. Vegan options are clearly marked and you can go for miso soup, teriyaki tofu or veggie sushi amongst other things.
There is also a well-stocked shop at the back selling imported goods which I imagine would we great for a homesick Japanese person in Berlin :-)Pros: Fresh, authentic
Cons: Small portions