Eh! Not someplace I would recommend for Korean in Cleveland.
Sung's is a combo Korean and Sushi restaurant, which should tell you something about their food right off the bat. I came in for lunch and ordered from the Korean side of the menu not the sushi. Which is I guess where I went wrong seeing as how most who like Sung's ordered the sushi.
Sungs is not in my top 5 choices for Korean in Cleveland. If you want good Korean head to Seoul Garden, Meiga, Seoul Hot Pot or even Korea House.
I went with a group from work and we all ordered something different. I ordered the yaki soba (bland!) and the others ordered chicken katsu (chicken was good, the sauce seemed off), bibimbap (okay) and 2 tempura sushi combos (good but small).
Overall this place was a complete miss for me. I maybe might try it for sushi if friends were set on coming here otherwise I wouldn't make the trip.