4 : Karen Bee, Part 4 -

The Karen Bee arc serves as a sequel to the Nadeko Snake segment from Bakemonogatari . While Karen is a self-proclaimed "hero of justice," the arc explores the difference between "real" and "fake" justice. Kaiki represents the "fake" supernatural, yet his impact on Karen is dangerously real, forcing Koyomi to intervene to save his sister.

Koyomi Araragi returns home to find Karen suffering from an intense fever—a symptom of the bee's sting. He discovers that Tsubasa Hanekawa has been secretly cooperating with his sisters to track down the source of a curse spreading among local middle schoolers. 4 : Karen Bee, Part 4

The title refers to the fourth episode of the anime series Nisemonogatari , which originally aired on January 27, 2012. This episode is a pivotal moment in the Karen Bee arc, shifting the focus toward the fallout of Karen Araragi's confrontation with the conman Deishuu Kaiki . Episode Plot Summary The Karen Bee arc serves as a sequel