Corpse Party: Missing Footage is an original video animation (OVA) that serves as a prequel to the main Corpse Party: Tortured Souls storyline. Rather than focusing on the horrors within Heavenly Host Elementary, its plot showcases the daily lives of the main characters before they are transported to the cursed school. The OVA depicts the events leading up to the "Sachiko Ever After" charm ritual, which is the catalyst for the entire series.