A 24-episode series on YouTube that serves as a prequel or provides deep lore.

The character Misora Shino (portrayed by Tokino Sora ) is at the center of the mystery, seemingly forced to repeat her final weeks at the school.

Various Hololive members portray students caught in this "glitched" reality, such as Shirakami Fubuki (as Shirayuki Inari) and Natsuiro Matsuri (as Natsuno Hanabi).

VR-style introductions to the characters and their eerie environment.

The school is haunted by an urban legend involving past tragedies, including a massive landslide that killed many students.

Players navigate an "endless hallway" and dark school rooms, facing psychological scares and apparitions while trying to uncover the "Terrifying Truth" behind the ERROR. Project Media The narrative is expanded across multiple formats: The Game: A first-person psychological horror experience.

The story centered around the —a specific version of the hololive ERROR horror game—revolves around a supernatural mystery at the fictional Aogami High School . The Core Narrative