This is my go-to place for sushi when I'm on my own.
The place is fairly small, about a dozen tables. There's a couple of nice and friendly waitresses.
I'm not one for fancy rolls. I think putting cream cheese in a sushi roll should be a crime. The majority of what I eat is nigiri, the slices of fish sitting on a handful of rice, or sashimi, slices of fish by themselves.
The octopus is tender, which is good because it's cooked and too easy to overcook. The raw fish I've had - salmon, tuna, yellowtail, snapper, and probably more, depending on what's best in season - have always been fresh and full of good flavor. It's trivially easy for me to spend more than I should here, because the fish is so good.
I've had little of their other food. Their edamame is good, which is to say, well steamed, and the seaweed salad is tasty. You do not get soup and salad for free unless you order a specific dinner plate or combo, and that's fine. The basic soup and salad are nothing special.
For those who don't get the name, Japanese O' is a signl of politeness. It's not an Irish spelling, it's a way of politely naming the restaurant.