This is an interesting but little known manga that I'm sure it won't take long to eventually take the big step into anime.

Also known as Blue Exorcist, its author is Kazue Kato and it began to be published by Shueisha in April 2009.

With the visual style of D-Grayman, its premise is simple but it hits you on the face on the first pages: Rin is the typical boy who lives fighting in the streets, is an orphan and lives in a monastery.  


His protector, father Fujimoto, constantly fights with him so he can finally get a job, because when he reaches 16, he can't stay at the shelter anymore.
His twin brother, Yukio, is more reserved, shy and a pacifist. Yukio is accepted into the True Cross Academy for his medicine studies.
 

In a fight with an enemy of his neighborhood, Rin discovers he can see demons and also has supernatural powers to combat them.
 

When father Fujimoto comes to exorcise the demon that was hounding Rin, he reveals the thing he least imagined in his short and difficult life: he is the son of Satan with a human woman.
 

This manga definitely has the potential to be the next Bleach in terms of a supernatural theme. The Saint Seiya style fights are there, the drama of being half-human half-demon is there, too. The tone is also very similar to Death Note, in the Gothic look of the panels and the characters.
 

You can get this manga on scanlation sites, it's currently 15 chapters and 3 volumes long but well worth it!
 

Here's a preview: