Eager to know why her best friend’s boyfriend dumped her for a man, the headstrong Eiya Arakawa suggests a meeting with them. Gathered together at a café, Yuuga Oota agrees to answer Eiya’s questions only if she can correctly ascertain the relationship of a couple sitting across from them, which she does on her first attempt. Amazed by her astounding intellect and intuition, he invites her to a private meeting where he introduces her to the concept of Slave Control Method, or SCM, a retainer-like device that has the ability to turn people into slaves. When two SCM users enter a duel, the devices exert a powerful influence on their brains. Once the duel is over, the SCM amplifies the loser’s sense of obligation and forces them to bend to the will of the winner. Wanting desperately to test his own abilities, Yuuga asks Eiya to act as his insurance in the event that he himself becomes a slave. Granted access to 10 million yen, Eiya’s job is to convince Yuuga’s would-be master to free him from his servitude. Though hesitant at first, Yuuga’s words resonate with her personal yearning for something more from her life, and she agrees to his request. However, when a mysterious organization begins rapidly accruing slaves, Eiya becomes entangled in a game far more dangerous than she ever could have imagined.

During the final episode pre-screening event on Friday, it was announced that Double Decker! Doug & Kirill TV anime will get three extra episodes. Titled Double Decker! Doug & Kirill: Extra, the three episodes will be streamed via Bandai Channel and other streaming websites between February and April 2019. The Blu-ray and DVD for the extra episodes will also be released on May 24, 2019. (Source: MAL News)

The once peaceful city-state of Lisvalletta has found itself beset by a dangerous new drug called Anthem. The side effects of the drug allow the user to enter a state of Overdrive, wherein they mutate into superpowered beasts with inhuman abilities. With the police powerless to stop this new threat, the responsibility falls upon the Special Crime Investigation Unit SEVEN-O. To offset the dangers of this work, the investigators work under the patented Double Decker system, which requires them to team up in buddy cop pairs. As a child, average police officer Kirill Vrubel fantasized about being a hero who would save his school from a random terrorist attack. His chance to be a hero arrives when his landlady blackmails him into searching for her lost cat. Upon arriving and falling asleep in an abandoned warehouse, Kirill finds himself in the middle of a hostage situation involving an Anthem user. By teaming up with SEVEN-O detective Douglas Doug Bilingam, Kirill earns his spot as the newest member of SEVEN-O. Now, with the help of this secret organization, he may finally achieve his dream of becoming a hero.

Subaru Mikazuki is a 23-year-old mystery novel author, major introvert, and an awkwardly shy person. He would much rather stay home to read a book than go outside and interact with others. Further exacerbating this life of solitude, his parents tragically died in an accident many years ago, leaving him alone in the world. One day, while giving offerings at his parents' grave, Subaru runs into a small grey and white cat named Haru, which he ends up taking home with him. Subaru, however, has never taken care of anyone else in his life—can he even take care of a cat? Haru is grateful toward Subaru, as he gives her all the food she wants—a luxury for a cat who is used to a rough life on the streets. But she notices that Subaru can't even seem to take care of himself! Will she be okay with this dunce? Doukyonin wa Hiza, Tokidoki, Atama no Ue. tells the story of an unlikely friendship between a human and a cat who try to foster an understanding with each other.