I tried to avoid spoilers, plot summary, and other things, but still, something can be considered as such, so read all of the following at your own risk.
The success of a work often depends on its finale. After all, an unsuccessful ending can easily disappoint readers, leave an unpleasant "aftertaste".
I didn't want to write a review of this manga right after I finished reading it. I thought that after some time after the final chapters my opinion of the manga would improve and I would give a higher score. And so it happened. I initially rated this as a 3. But anyway, I just can't score it higher than 4 and still think that the author of "Domestic Girlfriend" failed the ending. And I'm not the only one who thinks so. The scores drop from 7.71 before the final arc to 7.32 at the time of writing this review say a lot. And it doesn't matter which girl you were rooting for.
Just a warning. Whatever you do, if you haven't read the manga yet, I recommend do not read it. But if you are going to start reading it anyway, don't get attached to any of the manga girls.
I'm really used to love reading this story till the last arc. But since chapter 265, the story has fallen off the cliff in the most contrived nonsensical way imaginable. This, two cheap timeskips, discarded development of all the characters, the inability of the MC stand by his choice, denial of fatherhood, family values, and even love, the replacement of all the above with the word "Fate" make DomeKano one of the worst manga I ever read. The author came up with too good a love triangle, but not how to solve it and instead of a well-thought-out drama, insight into the characters, conflict resolution and choice of sides, in the end we are getting an unnatural, artificial plot twist so moldy and formulaic that the nuclear compartment of the teams of both ships just explode (well, unless their goal was just to see their girl won no matter how it was done). It does leave the feeling that the manga was completed in a hurry, and it's really strange, with such number of chapters and a pile of fillers. May be the author wanted to please everyone, but it didn't work out. Readers have already compared the ending of this manga to the ending of "Game of Thrones". It's really just as bad, if not worse.
From the manga positive points I can note artwork. The art is quite good and detailed for weekly manga, although not awesome one and exaggerated happy faces with wide open mouths do not look very good.
P.S. Out of all the gals who had to deal with Natsuo, Momo the most fortunate than anybody in the manga.
For some reason I doubt the possibility of the second season of the anime.