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Not bad, not great: I recently moved to Ohio from Colorado, and the first order of business was to find a good sushi establishment nearby. Sushi Katsu is pretty good, but far from the best.
Food quality was probably on the order of 4 of 5 stars. Fish is fairly fresh, but not an awful lot of variety (ie if you're looking for Spanish Mackerel or Tasmanian Salmon, or even [pressed] Oshi Sushi you won't find it). With only one sushi chef and one waitress they get pretty behind and slow when busy. Lack of variety and slow service bring this one down to a 3 star.
That said I haven't found much better in the area.. yet!
EDIT, late 2009 - Kasai in Wadsworth is far superior if you're looking for good stuff and don't mind a little drive.