I had assumed people would be upset about the ending, but for the prevailing sentiment to be that this ending is somehow worse than PS's was not at all expected. I think the story wraps up quite nicely and is definitely head and shoulders above PS's that is littered with loose ends and character assassination. In the end MC fulfilled his task as a spy, is able to provide for his family, etc. There was also no way Mariko and him would have a "normal" relationship. You could complain that the conflict between him being the spy and her being the person being spied on was a bit fast tracked, but given the nature of it's publication status it's hard to really argue that it could end any other way. Senpai being back doesn't bother me. First and foremost this is a gag/comedy manga, and 9 times out of 10 gags overtake plot significance so it was well within my expectations. A 7/10 manga with a decent 6/10 ending. Wish it went longer but not unhappy with what I got.