Only saving grace is the price. It's a cheap snack joint. Don't expect much.
And whatever you do, do not order the takoyaki. They make it on the spot and it takes a good 10-15minutes. And it's horrible. I can make them better at home.
And none of these kids are professional cooks. All their menu are basically re-heated instant foods.
Bottom line: go there if you want to snack on udon, which is about the only thing edible. But remember it's still a packaged udon noodle boiled in powder soup.