Garei: Enchained Spiritual Beast 1

Freshman Nimura Kensuke has the ability to see ghosts, and his life changes when he meets Kagura, a girl with the power to summon a "Ga-Rei" called Byakuei. The two work together to find evil spirits and devour them with the Ga-Rei under the auspice of the Ministry of the Enviroment's Supernatural Countermeasure Division.