Damn, I did not see that ending coming. Lol. It really saved the show. Haretsu is similar to Godan and Lady Joker in that its a thriller with lots of social commentary and questions running throughout the story. Sometimes, things are spelled out too much (some monologues are too long) but generally its very fun and its the first show I've seen to look at the big picture issue of the aging population of Japan.
I like that Haretsu looks at the issue of the aging population being a burden on the country by debating the value of life and the struggle against death. The story looks at it from various perspectives like the survivor from the Tokyo bombings and children of bedridden parents. I love how the writer manages to weave elements of the debate into the story. There are no easy answers to the questions that Haretsu raises but all I need is a deep examination of the issues, which is what I got from Haretsu.
Unfortunately, I can't give Haretsu a must watch because some of the thriller bits are not as exciting but I do highly recommend it because the script is very intelligent and does everything else very well. My hats off to NHK. If you're looking for a Lady Joker like show that's pretty good, Haretsu is the show for you.