Craving good ramen to cure a hangover in Honolulu one Sunday, I decided to try Onoya. I tried to make a reservation using the Google Assistant but the request was rejected by the restaurant. I decided to just show up, and luckily, it was not busy.
I ordered the Tonkatsu Classic:

Overall, it was good. Broth was flavorful though not overly complex. The char siu was thin which is how I like it. The noodles were well cooked but thinner than I like. I believe you can request thicker noodles.
The gyoza was not the best I have had. It was ok.

Overall, service was friendly and fast. I would go back to try other ramens but skip the gyoza.