: As the students move through the school, the strain on their mental health becomes evident. Disputes over leadership and the morality of their choices threaten to break the group apart from within, even as the zombies press in from the outside.

The episode ends on a high-stakes note, leaving the students on the precipice of their next great challenge, with the realization that their biggest threat might not just be the mindless zombies, but the humans who have changed into something else entirely.

: One of the most terrifying elements of this episode is the continued evolution of Gwi-nam. Having survived multiple "deaths," he has become a "half-bie"—retaining his human consciousness and intelligence but possessing the strength and hunger of the infected. He begins a relentless, predatory hunt for Cheong-san, driven by a personal vendetta.

: The students realize they cannot stay in the music room forever. They devise a plan to reach the rooftop, hoping to signal for rescue or find a more defensible position. This requires a dangerous trek through the hallways they have spent days avoiding.

In this specific episode, the tension reaches a breaking point as the students of Hyosan High School face both internal conflicts and the escalating external threat of the "half-bies." The Story of Episode 7