Rengoku no Cartagra
煉國のカルタグラ
At Seirei Academy, strange demonic rituals are occurring, and transfer student Yuriya Yuuki becomes a suspect among his peers. One night, Yuriya spots a girl wandering near the dormitory and goes after her. Outside, he discovers a book that enables him to summon the demon Belial, who offers him a contract.
