The most authentic Japanese restaurant on state street was far as I know. I went with my friends for my birthday under the recommendation of a friend who's aunt works there in the kitchen. From that moment my roommate at the time who was really picky with Asian food fell in love with the place and would regularly eat there at least once a week (or at least that's what she told me).
I never tried the sushi so I can't judge whether or not they're good but I think their main dishes tastes just like the ones I ate while living in Asia. I mainly go there for their katsu curry. For a while I got sick of eating at Wasabi because my friends want to go eat there so often but it is still one of the first restaurant I recommend to a friend when going out to eat on state street.