Hmm… I wonder Actually, Gabriel will have the opportunity to change their Angel Blade shortly after the half-point of the story. The new options will vary depending on who your Gabriel has chosen to associate with and learn from.
In terms of afterlife for mortals, they typically are left to whatever religion they were part of in life. In terms of agnostic/atheist, reapers exist to take these souls to more of a limbo realm. (I don’t want to get into it too much here as bits and pieces will be revealed/explained by various characters).
Ramiel’s romance path is one that I foresee as being full of heartache and misunderstandings… There’s a lot of history and not of all of it is really good.
Michael does have a more humanistic view of romance than many angels who never leave Heaven, but he has no personal experience–just what he’s seen/read about. So if you do end up romancing him, you can shape his expectations. But romancing him is by no means easy… 18 years in terms of angel time is practically nothing, so while Gabriel is raising Daniel, Michael is back in Heaven doing archangel things.
Without the flashbacks/knowledge Gabriel acquires throughout the story, Michael’s behavior can’t really be properly explained nor understood… and because I’m keeping the reveal a surprise, he’s going to remain a seemingly one-dimensional jerk for the time being.
Normal, average humans are not aware. Iain, for example, is probably the most unaware of the supernatural world around them in terms of the Homicide Department where you will be working. Now Iain, as a character, is a Catholic, so he believes in angels and demons… just not quite the literal, physical presence that is Gabriel. Subsequently, when/if he finds out about Gabriel, he has a crisis of faith and goes to speak to his priest, who is more grounded to the point where he just looks at Iain and goes: “You believe in God. You believe in angels. Why is it so hard to imagine that they can walk among us?” There’s some opportunities to interact with others and reveal yourself, especially in the first half where you are supposed to be incognito. The second half of the story gets… interesting.
And while most humans are not aware of the supernatural, there is a special branch of the government that deals with such things (but which is completely off the books, and is just a “conspiracy theory”).
As for manipulating faith, that’s one area where I hope to appeal to the manipulative/dark Gabriel’s who can play upon people’s beliefs and ideals. You also encounter quite a wide variety of people and whatnot.