The OP Gun's introduction in the series marks a turning point in the story, as it provides the characters with a much-needed advantage in their fight against the undead. The gun's creation showcases the resourcefulness and ingenuity of the characters, who use their skills and knowledge to craft a powerful tool.

The OP Gun, short for "Over Pressure Gun," is a critical element in the show. It's a makeshift shotgun created by the characters using available materials. The OP Gun becomes an iconic symbol of hope and resistance against the zombies.

The script of "All of Us Are Dead" masterfully weaves together character development, plot progression, and themes. The show's narrative is well-structured, with each episode building upon the previous one, keeping viewers engaged and invested in the story.

If you haven't watched the series, proceed with caution, as I'll be discussing key plot points.

Regarding the script and the OP Gun, I'll provide some insights into the show's narrative and the significance of the OP Gun in the story.

The series takes place in the fictional South Korean school, Hyosan High School, where a zombie outbreak suddenly occurs. The story follows a group of students, including the main characters, such as Park Nam-ra (played by Yoon Chan-young), Choi Yi-chan (played by Choi Jung-hyun), and others, as they fight for survival.