I was pretty disspointed. The art really appealed to me and the premise seemed good.

Keika's character is badly written. He is supposed to be wiser but he just isn't. Not only does he not show in any significant way, his emotional reactions are quite shallow. He seems to search Riri just for the hack of it (and just as easy he decides to stop looking for her and stay with Teio) and even thought he has learned lots of languages and how to make medicines, he surely has failed to understand what Riri meant about love and other 'species'. She clearly said that it wasn't wise to fall in love with humans, since their life span were so much shorter. However, she never says nothing against their nature, nor does she implies she regrets her love. So he shouldn't be so prejudiced about the ones from 'heaven'.

About the plot itself, it lacks in development and has a lot of unnatural happenings. Not to mention the absurd ending. I already knew it would be 'axed' but I did't imagine it would be that unreasonable. It's absurd telling the readers that Teio actually gets the general position. It seems the mangaka wants to show that their relationship did not set back on any other level of their personal lives, but there is no need to that, and actually brings their passion down. And adding that he was youngest is just an act of marry sueing him! For last and not least, telling that Keika was the only demon ever to be accepted in Heaven is to say that the people from there kept being as the stereotype portrait, or that Keika was an exception within demons... but that can't be true, since at least Riri wasn't your usual evil demon...

However the art was really great, and I believe that the translations weren't that accurate, fouling the dialogues. But I'm pretty sure that i wasn't just the translation's fault.