A-1 Pictures Inc. (Japanese: 株式会社A-1 Pictures, Hepburn: Kabushiki gaisha Ē-wan Pikuchāzu) is a Japanese animation studio founded by ex-Sunrise producer Mikihiro Iwata, a subsidiary of Sony Music Entertainment Japan's anime production firm Aniplex.
An evil sword has possessed King Arthur himself, who has now become the infamous Black Knight, and is turning the kingdom to chaos. With the hero of her world now its big villain, Merlina summons a hero from another world to save the day, and that hero just so happens to be Sonic.
