I'm going to oppose the previous commenter simply because I disagree with a few of their points(skip to bottom to skip my counter args):
- I don't think this author intended the moral premise of "humans are interesting complex multi-faceted creatures."
If that's what the author intended, then I'll recant because that didn't show through. I got a message more concerning interior and exterior appearances and trying to define what is good. But that's very slight as well. In any case, it really just comes down to the smut. While this idea of "interesting humans" is something mentioned by the very end of the series, I think it didn't encapsulate the series.
The time when the angel/gods were saying this was more vouyeristic, to me. It's as if they're interesting because of their darkness and their impurities as well as misconceptions of impurities, not because of actually being multifaceted. It's just like seeing something different once in a while. Heaven(or wherever that was) doesn't seem to have that, measuring by how he didn't end up there.
- This artist's style in facial expressions helped the story more (in my personal opinion).
There were so so so many facial expressions, but I think that's the value in cartoons, comics, manga, etc. Subtleties that are sometimes caught in film by the best actors are used as emphasis in drawn and visual art, and I appreciated it. Ugly emotions should and do look ugly. Confusing emotions should look confusing. And well, the author's porn is also straight up emphasized porn (woot woot for the smut). Especially in this plot where there's a lot going on for the characters to comprehend, mixes of pretty and ugly emotions bubble together and it really made me feel more than just the horniness of a sex scene. So many more emotions going on there, but the sex is still a main focus.
My own review:
Come for the smut and get your heart bruised and hugged along the way.
The art is wonderful to me, but the plot can use a lot of work (come for the smut!). This story isn't actually that complex, and I also think it could have been longer or had prequel/flashback chapters. There is also potential in the side characters (though I hate love-V/Triangle fighting). I seriously enjoyed the smut and the bits of plot along with it the most since it kept the premise simple on the carnal human condition and the pretty d*cks.
Side note:
Because most of the story gets set in one room, it is more of an internal plot that benefits from Christian-cliches about what is good and evil.
There is arguably a sense of death & rebirth as the angelic boy loses one sense after another in the sequence mimicking an actual death process. Then the murder of the other one gives them both a new life and a newly inseparable relationship.