Within the alternate universe, there is the planet Tackran. It is in place of Earth, and has portals leading to our universe. The Great Raven Hrathlaque. It created the creatures, the land, and the Zinith. Nobody knows for sure if Hrathlaque is good or evil, but the creatures have followed Hrathlaque for every century.
About- Rhauren Casakra
Rhauren, Samara's bf, was born human (as was Samara) but eventually became Zinith a while after he found out Samara was Zinith. (Samara and Rhauren became bf-gf shortly after the revealing of Samara's new race.) While Rhauren plays viola and trombone, Samara plays clarinet and a Zinithrian instrument, the Lickhora. Both musically talented, the play Zinithrian songs and chants, which help them in their frequent battles against dark Tackranian demons.
Rhauren is currently 16 going on 17, 2 years older than Samara who is 14 going on 15.
About Stories of Tackran
No, it's not a bible, but the legends and stories of the Zinith.