@Ey_man
That's what happens when you give prosecutors the exclusive right to prosecute AND the right to investigate AND the right to conduct investigations by the police AND the exclusive right to request warrant for seizure and search. If one of your prosecutors did something sketchy? easy, just don't investigate/prosecute him. Because if prosecutors don't, nobodies can, and nobodies can force them to. Ever since they were given this ridiculous power in the dictator regime era some decades ago, they've turned into a gigantic interest group.
@BoILeRuSS S.Korean prosecutors have way too much power compared to their counterparts in other countries. It's because they were given those powers in the dictatorship-era some decades ago to unfairly investigate and prosecute the political enemies of the dictator regime. We're going through a lot of BS shitshow trying to normalize them. The dictator could control them because he had a whole army at his disposal. Now that the dictator's gone betrayed and shot by his own man, only the prosecutors with the outrageous power remain and there's no democratic measure that can really control prosecutors. In short, we're fucked.
Just keep in mind that if your political leader wants to give prosecutors both the right to investigate and exclusive right to prosecute, he/she is up to no damn good.