Since there seems to be lacking good ramen in the East Bay, it's good to find that Koji's in Danville is now serving Ramen. They have 3 different broths, Shio, Miso and Soyu and each can be regular or spicy. We tried the regular Miso and it was delicious. The broth was complex with good flavor and the Cha Siu was very tender. Probably not as good Dojo, Santa or Halu, but definitely worth it if you're in the area. I like it much more than Ryowa in Berkeley.
Now even more reason for me to love this place. This is one of the few authentic Japanese restaurants in the area. Not the cheapest, but well worth it. To cater to the local clientele, they do fusion rolls and all you can drink sake. But for me, the highlight is really their fresh sushi and traditional Japanese items. We typically do a sushi omakase and let Koji choose the selection. They also do a wonderful Kaiseki dinner if you call ahead. They cater to your budget, but I believe the minimum is $40 or $45 per person. I love their chawanmushi and often special request that.
They don't seem to get much attention on this board. Yelp reviews aren't too good, but that's because people seem to expect cheap sushi. It's a husband and wife team, so sometimes the service may be a little slow when it's crowded, but this place is well worth it.
480 San Ramon Valley Blvd
Danville, CA 94526