So Koi seems out of place in Arrowhead Fountains. I mean the center it's in definitely needs a sushi place and I am glad Koi is there, but Koi seems more strip mall-y/dive-y than anything.
They have a lot of rolls to choose from (at least 50, one named for each state).
We ordered the dumplings and two rolls.
I am pretty sure one of the rolls was wrong, but we really liked it so we didn't say anything.
The food was good, inexpensive.
The service was just ok.
It's definitely a place I would come back to after a movie, but not a place I would go out of the way to eat at.