It's not bad, but the whole 'innocent goes to prison' thing has been done better elsewhere (e.g. One ordinary day). It needs a bit more background about the ML, who seems a bit cold and unfeeling, in order to understand why he does what he does. There aren't many female characters so dismayed that they killed off the granny. I'm hoping the gambling scenes aren't going to be the USP of this drama but I suspect they may well be...
I don't know whether i would do it, going to a prison to collect an evidence ...nobody knows whether that exists…
IKR, I thought the ML was supposed to be very smart, but he made some stupid decisions in the first couple of episodes. I want to root for him but he's not that likeable...