Newyddian by Charlie Godwyne

In 2027, the true nightmares descend upon Augarten…

Six months after retrieving the lost magic wanted by Augarten and the memories owed to his higher soul, Gabriel struggles to funnel that magic through his body without losing who he is. He is grounded to the present by Florian, who is keeping the coffee shop going, and Solomon, who travels into the mountains to pray for Ian.
Things are just settling down when Gabriel sees omens that Augarten’s nightmares are coming. In the process, he also discovers that Ian—who is no longer an angel at all, but a human in between lives— must open a door in Augarten and step into the sun in order to complete his transition and truly become their guardian angel.
When asked whether she will allow Ian to step through, Augarten insists on a bargain, and Gabriel must pay the price—even if it takes him away from his lovers and the happiness he has worked so hard for.
Florian fears the coming nightmare is a war in Europe, and the three men need an angel on the other side to guide them. But they’re running out of time, and terrified that what they stand to gain could come at the cost of their treasured love.
Newyddian, the fifth and final book of the Augarten series, which is best read in order, is a 50,000-word MMM urban fantasy romance about a love that spans lifetimes. It contains magical realism, cute baby trees, a book bindery full of lost memories, and even in the darkest times, lots of espresso.