Guren no Arma

Enter Weiter Andreon, a young witch with special abilities to communicate with fairies. That day, saddened by her parent’s death, Weiter wanders into her back garden where she finds a wounded young man. Weiter decides to take this young man under her wing despite meeting objections from everyone else but her uncle's friends. In the magical lands of Alma, where Gurens are worshipped as guardians and protectors, Weiter finds herself beginning a new adventure with this mysterious young man who appears to be more than what he seems.
(Source: Girls' Generation)