There are few things in this world that spell out culinary and gastronomic disaster; a sushi-lunch buffet for $10 is one of them. Just think about it: a normal order of fresh nigiri from an above-average sushi bar will run about $3 or $4 for run-of-the-mill fish like sake (salmon), hamachi (yellowtail), etc. So how does one profitably run a sushi buffet that costs $10 to get in? Easy. Just get rid of the fish (or at least the fresh fish, anyways). Even though rice and other grains are continually soaring higher than ever, it still costs a restaurant just about a couple dollars max to fill someone up on rice for lunch.
So here’s a basic breakdown on how you can identify a sushi buffet (please refer to the diagram above):
The first thing you’ll see is the overwhelming amount of rice. I’ll admit that I was a little surprised that Rusan’s even had pieces of nigiri sushi out (about 5% of the available sushi) because the ratio of fish:rice is considerably higher than the ratio required for a roll, which usually ranges from about small to zero. But let’s look at the rolls, because it’s easier to see that ratio; there’s quite a lot of rice on the outside (regular unseasoned non-sushi rice, by the way). This is usually representative of the sushi selection at buffets. Sometimes they’ll try to trick the consumer by frying the roll in tempura batter to disguise the rice, but they’re actually getting even more carbohydrate mass than regular over-riced rolls. But in the end, all that matters is that the consumer eats enough rice to feel full for just pennies on the restaurant’s behalf. Note: this is why there’s usually extra charges for not finishing your rice.
Second of all is the addition of extra sources of carbs on the plate. In the back you’ll notice a pile of noodles. This is a good way of making consumers think “Wow! There’s a huge selection here!” In fact, there are usually three different choices of carbohydrates at Rusan’s for lunch, ranging from veggie fried rice to veggie lo mein. The key is to not include meat because it’s expensive.
Third is the use of low quality fish when and if it must be used. If you look carefully at the toro, you’ll see that it’s the color of a neon pink highlighter. I usually make it a rule to not eat neon-colored foods. I feel healthier that way. Other money-saving fillings that can be, and usually are, used in lieu of fish are: cream cheese, tempura shrimp, barbecue pork, krab, avacado, and cucumber. The emphasis is on cream cheese at RuSan’s. Maybe people really do like it, though. In that case, it works for everyone.
So in summary, the anatomy of a sushi buffet is highly distinguishable from other dining establishments, whether they be buffet or not. The most notable characteristic is the overwhelming amount of carbohydrates (i.e. rice and noodles). I hope this helps you in identifying any potential sushi buffets out there (and staying away from them, too).
Rusan’s Sushi and Seafood 505 12th Ave S Nashville, TN (615) 252-8787

Can you comment about the techno music?
AND what about the full dinner menu?
I really enjoy techno music, especially when eating Asian food. It reinforces my Asian-ness.
As for their dinner menu, I probably won’t head back for dinner.
oh boy do they love to use their cream cheese as filler. clearly, the lunch buffet is not of the same caliber as their dinner menu. Considering it is priced at just over ten dollars, I think that you are being overzealous in your complaints. Boom!
I don’t think most people go to a place for both lunch and dinner and then make their judgment about the food. Usually restaurants try to make their first impression their best impression. So I think it’s a little unreasonable for an establishment to expect diners to completely separate its lunch and dinner menus as two separate cuisines.
I would agree with you unless that lunch menu is not a menu at all but a buffet.