Super authentic, which apparently shows my immature pallet. I just can't fall in love with their ramen dishes despite two attempts. It's super good...but I've got a favorite spot just up the road.
I've had both regular ramen, and I've had the miso spicy. The pork over rice bowl is a great appetizer.
Place is tiny, but they are efficient and service is top notch. If you're looking for authentic Japanese cuisine, you'll be hard pressed to find better.
Prices aren't cheap, but neither is the food, ambiance or experience. It's all really good...but I guess I just prefer a more "basic" offering.