Tairen Soul - Book One!

The action takes place in a strange world, populated by people, magicians, the people of the Fey and various mythical animals (as well as other peoples who do not yet exist here).
That world seems like a mixture of medieval and modern times. Concrete examples: While there are already newspapers and street lighting, but people still fighting with swords. The clothes vary from nation to nation and social status (eg dress the guarantor Lichen like in England 150 years ago, during the fashion of the nobles is more representative of the Renaissance and the Baroque and the Fey wearing typical medieval costumes).

The Fey - immortal and magical! The ancient people is a hybrid breed of humans and the so-called. Tairen (a mystical winged big cat). Where the look is almost entirely human and dormant genes of mythical beast, so to speak in their blood. Only her king who "Tairen Soul" is capable of the rauszulassen "inner" Beast and accept tairen shape ... so to speak in the werewolf-style!
The magic of Fey based on elemental magic. So there is water, earth, fire and airbender ("Avatar - The Last Airbender" is greeting ^^). In addition, the extremely rare gift - magic of the mind!
The Fey also have a strange choice of partner system. If the souls touch each other, a Fey has his true companions found ... and that happens only once in a lifetime! This "must" feel the hard way also the female lead character Elysetta.
People incidentally also a strange mating ritual. I only say: hickey means engagement (whether voluntary or sneaky attached).
In this world, of course, nothing is perfect. There are underlying tensions between the people and the Fey ... as a result of an insane act of revenge on the people for the murder of the Fey King Rain Tairen Soul women 1,000 years ago. In addition, the religion of the people strengthened (which is similar to Christianity) the conflict situation. For all the magic is true, according to the "Church of Light" as tainted and so the Fey are slandered by the priests and their followers as sorcerers and demons. Exorcism is a common practice. Also this procedure had Elysetta to go through ... is it but a foundling with a powerful gift from which it itself has no idea! Until said Fey Königsrain Tairen Soul in you realize his true soulmate. From then on their lives - and their homeland - completely revamped.
In addition, the story seems to repeat, because it is a dark threat to sneak and therefore old enemy - the dreaded black magicians of the neighboring kingdom and the first wife of the murderer Tairen Soul - begin again to rain.
And Ellie supposed to be the key that leads to victory or ruin the world.

A`propos:
The ending is quite open, because the first story arc is not completed until the second band. The same applies to the volumes of three, four and five.

The Tairen Soul pentalogy is incidentally also published in Germany. The first volume is The Curse of the Elven King (which is ever completely wrong ... and flatly dt. Cover image does the rest). That's why I prefer to buy me the English version, which is also present almost completely (ie must not wait forever).
However, the map in the book is drawn pretty geschluddert while one has intently into the dt. Version in this respect more.
EDIT: The second German band has then but made an effort and provide him with an appropriate cover and title: Lady of Light and Shadow

CONCLUSION:
Who Jean Johnson's "Sons of Destiny" saga (Volume 1: The Sword) and the "Seven Waters" trilogy (Volume 1: Daughter of the Forest) by Juliet Marillier liked, who would also appeal to the "Tairen Soul" -Pentalogie ,

PS: The title of the subsequent volumes loud ->
Lady of Light and Shadows
King of Sword and Sky
Queen of Song and Souls
Tairen Soul

EDIT: To whom this mixture between "high fantasy" and "paranormal romance" Like, I could heartily the "Guardians of Lights" series of Renee Wildes recommend (Volume 1: Duality)

In the comment link to HP of the author and her work is included!