While many of us would likely scream at even the thought of a ghost being near, freshman Nimura Kensuke considers it a mundane part of daily life, given his uncanny ability to see numerous spirits every day. His situation intensifies when he meets a girl who alters his life from that point onward. Her name is Kagura, and she possesses the power to summon a powerful "spirit devourer"—otherwise known as a "Ga-Rei"—named Byakuei. So, what is Nimura to do? Chase down evil spirits and have Kagura summon the Ga-Rei to devour them, naturally! Now, come feast on their adventures like some ravenous Ga-Rei!