That's actually a good question considering the only angel mentioned in-game is Eva (who's dead) I'm wondering what happened to the whole species.
They never mention anything about this at all and that bothers the hell outta me. You have a world controlled by demons you establish that there are angels in the world but then you mention NOTHING at all about them? WTF? Why even use them in the first place if you have no use for them?
Eva could have easily just been human or even an angelic demon and the only thing it would have changed would be that stupid nefloom angle. Honestly demon/human actually works better considering how Donte apparently has humanity some kind of way.
This is like if someone wrote a book about a half vampire/werewolf who fights vampires but beyond that couldn't be arsed enough to write the one extra sentence it would take to example where they are now.
"They all got rabies and died", was that really so hard? --- Son of the Legendary Troll Knight Shatter