The broth is what makes ramen amazing. If everything else is on point but your broth isn't...you're screwed. Unfortunately, that is pretty much the case with the ramen at Touhenboku. Although the light ramen that I ordered had a lighter broth, I found the broth to be overly salty and too watery. The chicken fell apart when I picked it up. There was also a lack of toppings (minus the eggs...the eggs were one of the few things that saved the ramen). The size of the ramen is also crucial. Ramen is meant to be very filling. The size of the ramen bowl at Touhenboku is about the size of a small bowl of pho. If you're looking for something light, perhaps the size of the ramen here at Touhenboku would be perfect for you. For me however, the size should've been bigger. What I did like about the light Touhenboku ramen that I ordered was that the noodles were perfectly cooked and that there were two eggs (instead of one like some ramen shops). We had the mille crêpe for dessert and it wasn't too bad. It tasted like it has been defrosted for a while but overall, dessert wasn't too bad.
I also liked the modern wooden decor and how nice and accommodating the staff were. Service was also very fast. I wasn't too pleased with the utensils though - my soup spoon was either used (and the staff neglected to notice that it was) or it wasn't washed properly. At least one of the servers was really nice about it and immediately gave me a new soup spoon.
If you take your ramen seriously, I would not recommend coming here. Overall, good and fast service and nice decor. However, since I love my ramen, I would probably not be coming back here any time soon.