An OVA that will be bundled with the seventh volume of the Shinmai Maou no Testament manga, to be released January 2016.

The infamous Shounen Bat (Lil' Slugger) is terrorizing the residents of Musashino City. Flying around on his rollerblades and beating people down with a golden baseball bat, the assailant seems impossible to catch—much less understand. His first victim, the well-known yet timid character designer Tsukiko Sagi, is suspected of orchestrating the attacks. Believed only by her anthropomorphic pink stuffed animal, Maromi, Tsukiko is just one of Shounen Bat's many victims. As Shounen Bat continues his relentless assault on the town, detectives Keiichi Ikari and Mitsuhiro Maniwa begin to investigate the identity of the attacker. However, more and more people fall victim to the notorious golden bat, and news of the assailant begins circulating around the town. Paranoia starts to set in as chilling rumors spread amongst adults and children alike. Will the two detectives be able to unravel the truth behind Shounen Bat, or will the paranoia get to them first? [Written by MAL Rewrite]

Satou Matsuzaka is a beautiful high schooler who has a reputation for being permissive with men. However, a chance encounter with a young girl named Shio Koube makes Satou realize that this is her first and only true feeling of love. Telling others that she lives with her aunt, Satou secretly shares an apartment with Shio. Despite her innocent appearance, Satou is willing to do anything to protect her beloved, resorting to desperate measures to ensure that their "happy sugar life" remains intact. [Written by MAL Rewrite]

Fifteen-year-old Megumi Shimizu dreamed of a glamorous life in the big city; however, her unexpected death in the quiet village of Sotoba marks the beginning of what appears to be a ferocious epidemic that turns the hot summer into a season of blood and terror. A young doctor named Toshio Ozaki begins to doubt the nature of the disease and comes to understand that to discover the truth, he must abandon his humanity. Meanwhile, Natsuno Yuuki, an antisocial youth from the city, is haunted by the sudden death of Megumi and must realize the pain of friendship in the face of his own tragedy. Toshio and Natsuno form an unlikely pair as they work together to save Sotoba before it transforms into a ghost town of vampires. Shiki, adapted from the horror novel written by Fuyumi Ono, goes beyond the average vampire story. It tells the tragic tale of survival in a world where one cannot easily distinguish between good and evil. Abandoned by God, the Shiki, as the vampires call themselves, have only their will to live as they clash with the fear of the paranoid/unbelieving villagers. Shiki explores the boundary that separates man from monster. [Written by MAL Rewrite]