B: The Beginning

B: The Beginning is an original net animation (ONA) series created by Production I.G and Kazuto Nakazawa. The series premiered worldwide on Netflix on March 2, 2018. The story is set in the technologically advanced archipelagic nation of Cremona, where crime and violence are rampant. The main characters include: a vigilante serial killer known as "Killer B" who has thrown the city into chaos; Keith Flick, a legendary investigator of the Royal Investigation Service (RIS); and a mysterious criminal organization. The story revolves around the protagonist Koku, Keith's attempt to solve his sister's murder from eight years ago, and both of them working against the Market Maker who control the island's government. Koku is a demi-human with the ability to shapeshift parts of his body into wings and blades. Season 1 was released in 2018, and Season 2, titled B: Succession, was released in 2021.