Yo! This game hits it head on. Music, Visuals, Design. Even just the build-up and intro had me hyped up. Cool concept and fun delivery.
Not sure if it would be good, but I found myself wanting to do half-steps all the time between the beats of the rhythm. Also it didn't seem to give me enough sushi to hand out later on, but maybe you get more if you keep the combo going?
Very cool game!