I sometimes wanted to ask myself while reading the author's (sometimes optimistic?) comments: ma'am, are your... are (were?) your friends okay???
I know that some of this feels telenovelesque and a bit wish-fulfillment (ie Haruto's role, which, tbh? I feel that the author wanted to present us at least a "decent" man with all the kerfuffle of the cheating situation), but frankly I kinda see that it's also to present us a very real situation that many Japanese women are trapped (for lack of a better word) into due to their culture values (the divorce laws' explanation-attachment in one of the chapters is very helpful in that regards...
geez 
). There's lot here that truly makes you reflect about their values and such. But it's always at the cost of
what (like, losing friendships, for example).
A bit of "I can understand also why many Japanese millenials/gen z do not choose to marry these days". If you want a bit of a palate cleanser? I would recommend watching (or reading? maybe? it was adapted from a manga by Youko Nemu) "Turn to Me, Mukai-kun" which is a series about an early 30s Japanese man wanting a romance after being a decade w/o a girlfriend and an interesting insight about dating, romance, and marriage while in that age, with different point of views about all of it.