Since I didn't found this series on the masterlist, I'd like to start a thread.
This series is not that new, being aired on 2008, it provides the backrgound of the manga which is called Ga-Rei, by background I mean, a more in depth-story of two of the main protagonists.
Manga Spoiler.
The Ga-Rei manga follows the story of Kensuke Nimura who has the ability to see ghosts since he was a kid, until the fateful day he met Kagura Tsuchimiya (voiced by Minori Chihara in the anime) he had been trying to live a normal live, despite his ability to see ghosts, unbeknown to him a goverment agency specializes in the destruction of evil spirits which can cause chaos and death in human society, Kagura is an exorcist of such agency, and recruits Kensuke because of his special abilities, the story then develops on Kensuke's growth as an exorcist, and Kensuke's own feelings for Kagura
The anime provides the background to all of this, and it's actually a quite good show, despite its short length (12 episode series are too short) you will come to enjoy it and become familiar with its characters, who, provided with awesome voice acting will make most of you keen on reading the manga.
Now I know this post is not as eloquent as many others out there, and perhaps more than one person will reply: "All your grammer are belong to us". I apologize, english is not my mother tongue, and the whole purpose of this thread is to actually answer a question which is:
In the first episode the fourth squad has two members, Natsuki and Toru, who appear to be the protagonists but are quickly killed, perhaps there is another anime or manga which portrays their story and Ga-Rei simply is another story within that universe, if so could you please tell me which? I hate it when a show leaves some gaps like that.