Yamazaru is my favorite Japanese spot in town. Unlike the hipster restaurants that slim their menu down to just a dozen options or so, Yamazaru boldly offers a great selection of appetizers, sushi, noodles, and more. My coworkers have said good things about the rolls they've ordered, but my personal favorites are the una don (unagi over rice) and tonkatsu ramen. The una don is a delicious and filling alternative to the fancier rolls, while the quality of the ramen noodles here is the best I've had in Charlotte (mmhmm I'm looking at you, Futo Buta, and your over cooked noodles).
It's a shame they're only open for dinner, but even then their prices are reasonable for a Japanese restaurant. They're definitely packed during peak hours, but Sycamore Brewing is right around the corner, so it's not the end of the world to put your name down and grab a beer in the meantime.