Worst "Japanese" ever. There was one other couple in the place, but it still took almost 20 minutes for this fast food fiasco.
They cook the food right at the counter, which helped me understand how it got so bad. The main issues were that the grill was both encrusted in grease (not in a my-grill-is-finally-seasoned way but in a this-gunk-is-sticking-to-everything way) and was set at far too high a heat. My chicken seared immediately to the grill and the cook had to scrape it off in order to turn it. In the end, the meat was shredded and stringy.
There were four or five sauce options; I asked what one with an odd name tasted like, but the employees have apparently never tried it (and one confided that he had never eaten there). Too bad for me, I didn't get the hint when I was ordering so I stuck around for the food. Never again.