Very nice folks run this little food court spot. I assume it's family owned. You can watch them prepare your food fresh before your eyes.
I always order the $5.99 special, which includes a drink and a generous serving of teriyaki chicken served on, in my case, a huge bed of vegetables. They kindly allow me to pass on the starch and just give me more veggies. The California rolls aren't bad either.
They offer a frequent diner card which entitles you to a free teriyaki chicken or California roll after six meals purchased. Did I mention the free drink refills?
Not the best Japanese cuisine I've ever had, but far from the worst. The main appeal, I think, is the consistency of the people working at Osaka. Not at all what you would expect at a food court. Great.