Bundled with the 19th and 20th volumes of the Ao no Exorcist manga. The first episode is based on the second chapter of the second Ao no Exorcist novel Home Sweet Home. The second episode is based on the title chapter from the Ao no Exorcist: Spy Game novel.

As the grand festival of True Cross Academy draws near, exwires and exorcists alike combine their efforts to banish any demon that threatens the celebrations. Among them, Rin Okumura is tasked with exorcising the soul-devouring demon known as the Phantom Train alongside his brother Yukio and Shiemi Moriyama. During their mission, the Phantom Train escapes its tracks and begins ravaging True Cross Academy. In the ensuing chaos, Rin encounters a childlike demon he dubs Usamaro, and begins to develop an odd friendship with it. However, Usamaro's abilities might be far more sinister than Rin initially expected.

Arion is a young shepherd who lives in Thrace with his blind mother, the goddess Demeter. Their lives are peaceful until the day Arion's uncle Hades appears and lures him to the underworld, promising that there is a way to restore his mother's sight. To achieve this, Arion must kill the god who cursed her: Zeus, the king of Olympus. After years of training in the underworld, Arion—now a deadly warrior—embarks on his vengeful quest to slay Zeus. On his journey to Mount Olympus, Arion forges alliances with some unlikely individuals: the giant Geedo, the thief Seneca, and the mute maiden Resphoina. As he cuts a bloody path through a vast world of warring armies and mythical monsters, Arion begins to unravel the secrets of his lineage and the fate of the scheming gods.

Since childhood, Tadahiro Amatsu has two different-colored eyes - one brown and one light hazel. But because of a dark secret behind his left eye, he's become a target for the masked sorcerer Ayatara Miramune and his band of demons. To combat the demons appearing all over town, Yuzu Hieda, a priestess in training, recruits four other girls from her high school. Under the supervision of Yuzu's elder sister Kurako, the five young priestesses must undergo months of training to master their abilities. (Source: ANN)