Come here when you don't have to wait in line for too long. Avoid dinner times as the wait can be over an hour. Large parties will also have to wait a long time too, so plan your visit accordingly.
I got lucky when I arrived. There was a short line and was seated within 15min. It's not a big restaurant so hence the usual long wait. Service is similar to any other ramen restaurants. Green tea however is extra charge rather than complementary.
Ordered the intense shoyu signature clam broth ramen. It looks small but it satisfies. . Noodles are good. The sous vide Chashu wasn't as soft as I had thought, but that's fine and was still enjoyable. The chashu was cut pretty thin though; it would be nice if they gave you 3-4 pieces instead of 2. The clam broth was pretty good - it is their signature clam broth after all. I prefer the mild shio clam broth because you can taste the clam. The intense shoyu broth has a deeper flavor profile, with the clam taste masked by the soy sauce.
I thought the bowl of ramen was good. Not blow-your-mind good, but solid good. I would come back if the wait was not so long.