In this episode, Lambdadelta takes over as game master following Beatrice's defeat at the end of the previous arc. Another witch, Bernkastel, takes primary control of the human side in the game. She introduces the detective Erika Furudo, a new visitor to the island who approaches the murders from a "mystery" perspective, in contrast to Battler's "anti-fantasy" stance. The chapter also has a focus on Natsuhi, who receives threatening phone calls from a "Man from 19 Years Ago".