Gah! I wish I read the reviews more carefully so I would have known that you need to order the egg as an add on. Everyone raved about the egg, so I assumed it was included, but it's not!
Oh well, the ramen is still excellent. I had the tonkotsu, but since my mom ordered the tonkotsu shoyu and my grandma had the shoyu, I was able to sample 3 out of the 4 available soups. The soup has a clean flavor and isn't as kotteri (fatty) as what you find at Santouka (my fave ramen joint). The noodles are also very thin - like angel hair pasta. The chasiu is definitely a standout and meltingly tender. I also ordered a small fried rice and it was delicious and quite literally glistening.
We came here around 1:30 on Saturday afternoon and scored the last 3 seats at the counter. As others have mentioned it is a very small restaurant, but most people eat their noodles and go so turnover is fast. Definitely a great place to check out in Vegas for some authentic ramen!