Again, your query makes no sense with no info. Beating around the bush and trying to make guesses about what is perhaps a complicated situation is a total waste of time.
Bottom line: If you were charged with a crime or even if you were simply under investigation then in my opinion you're screwed, Korean Immigration will know and you'll be red flagged upon entry which at the very best means instant deportation and at the worst means jail. South Korea doesn't fool around.
I suggest you hire a professional with whom you can finally be honest and forthcoming about your situation. This obviously isn't the place to pose vague questions and magically expect to receive useful answers.
[ Edit: Edited on 30-Aug-2015, at 23:25 by CheersT ]