Whatever expectations you have from reading the title and the synopsis, the manga is absolutely not like that.
I was very prejudiced when I started reading this manga and thought I would drop it fast, after all the MC was this fat ugly guy who turned back in time to take his wife's virginity. I honestly expected smut.
However the opposite happened and I couldn't put it down.
The manga is a rollercoaster of emotions and handles a lot of heavy themes in a good and compelling way. The art is also very good and detailed. It really brings out the uglyness and the beauty of the characters without being too exaggerated.
What I really enjoyed was the character development of the MC over the course of the story. His motivation was shallow at the beginning but turned into this pursuit to give his wife a happy future while experiencing the different outcomes of his actions and learning more about her.
This manga is underrated and I definitely recommend it.