The story had its flaws but it was overall OK. I have learnt since watching that the original story is set in the 60's. That explains a lot of the problems I had with the story, the whole concept would be easier to imagine as "possible" if it happened in the 60's but made me wonder about its likelihood in a more modern day story. So it would have been better if they kept it in an obvious past tone. There isn't much else to say about it without going into the details, but the acting was good and the pace was also right. The mystery was mild but I was still curious how it would end so in that sense the story was successful. Wouldn't watch it again, but it's worth a try. It's a typical tanpatsu.