Skies of Heaven

Ariella's life had been perfect until she saw her family disappear before her eyes. Now she has found herself to be the only survivor on the planet. Everyone vanished without a trace. Just as she is about to do something drastic, she is confronted by a man claiming she is an angel with amnesia and he has been looking for her for over seventeen years. He also says that she was placed in an alternate world where she believed herself to be the only survivor.
Now Rumen and Ariella have to find Raziel, the angel who holds the secrets of the universe, who knows where the book of secrets is so they can use it to protect a special group of human survivors from being destroyed by demons.
Can their budding relationship endure the trials they must face as Ariella tries to remember who she is and to protect the remaining survivors of the human race? Maybe they will find love in The Skies of Heaven?