What happened to Dairyu (Honolulu)?
Was this the place on S. King Street across from Washington Middle School? If so it closed down a few years ago and was replaced with a soba shop.
I don't know about the hot sauce yakisoba, but a good ramen place is Taishoken on Keeaumoku Street. It's a branch of a Tokyo ramen shop and they make their noodles fresh on-site.