I haven't seen such stuff for a long time. Dropped after the third episode.
In the first episode, I was delighted. I thought that there would be a normal anime without vaginaworship, where women are as they are. But no, the men cattles were to blame for everything.
In the third series, it is generally sucks. One of the letters was sent by an embryo. Is that the embryo decided to send a letter? But for some reason didn't want to write anything in it. As far as I understand, in Japan it is a man who decides to have women an abortion or not, and women were banned from all contraceptives, since the letter was sent to him.
In the second episode, this postgirl didn't understand why people needed to live, and in the next episode she raved about suicide, and that only people are so dumb that they commit so many sins. Probably the creators of this "masterpiece" haven't the internet.
In general, philosophical delirium.