(contains some spoilers)
This could be retitled Misery: the manga. And I don't necessarily mean it in a bad way at all, it's just that it's quite the miserable story. I read it in 2 days, I couldn't get away from it. I love K-dramas so I guess this is my dominion. If you like K-dramas too, I guess you'd enjoy this.
Like I said in my first paragraph, the story is pretty grim and realistic. Two couples are struggling to keep their marriages intact. They're not having sex with their spouses and their intimacy is lacking in all ways. There's quite a bit of cheating, lying and a lot of heartache. I'm curious to see where the story will go from now (I read all the available 57 chapters), and I hope it's not to a happy ending because these things cannot possibly end well so far the sake of keeping up with realism, this story shouldn't either.
Most of the characters are relatable, albeit they are very flawed and will do your head in at times. The art is ok, very shoujo like and a bit generic but it's pleasant to the eye.
I give it a 7 overall. Am I actually enjoying it? It's complicated. And I probably need to read something lighter after this experience, nevertheless I would recommend.