Unlike his twin brother, Yukio, Rin Okumura never wished to know about their parents and the circumstances surrounding his own birth. Yet the master of time, Mephisto Pheles, gives Rin a key that transports him 40 years into the past when his late mother, Yuri Frederick Egin, was merely a child. With Mephisto's guidance, Rin leaps through the years of Yuri's childhood and her adolescence as an exorcist-in-training. Early on, Yuri meets Shirou Fujimoto, Rin and Yukio's adoptive father. As Rin follows Yuri and Shirou's lives, he witnesses firsthand the initial appearances of Satan, his true father, and the horrors unfolding at the True Cross Order's special Section 13. Yuri's unique connection to Satan eventually leads Rin to the truth behind the most horrific event in exorcist history and the day he and Yukio were born—the Blue Night.

Following the awakening of her Dream-Sight ability, Miyo Saimori reunites with her fiancé, Kiyoka Kudou, the captain of the special forces protecting the country against ill-intended individuals gifted with exceptional powers. However, the couple's blissful life is suddenly interrupted when Takaihito, the top contender for the imperial throne, sends Kiyoka on a dangerous mission. Traveling with Miyo to the remote household of his parents, Kiyoka must investigate unusual reports of demons in the region. Meanwhile, Miyo tries to gain the approbation of her callous mother-in-law, Fuyu, who refuses to recognize her as a family member. After Kiyoka repels an attack by the Gifted Communion, a subversive sect of special abilities wielders, he returns to the capital alongside his fiancée. As the looming threat against the imperial authority intensifies, Kiyoka must thwart the Gifted Communion's plans to protect Miyo and everyone he holds dear.

Remy, a cheerful and tender-hearted girl, lives with her mother in a French country town. One day her father returns to the town after a long period working away from home in a city. Her father tells Remy that she isn't their real daughter, and Remy is almost sold to an evil slave trader. It is Vitalis, a strolling entertainer, who helps Remy. Vitalis discovers her talent for singing and decides to take her in with his troupe.

Limited edition episode included with pre-orders for the 13th and 18th light novel volumes.