Inside “ Time Capsule ” was a file named “ 03072021_memorybackup.pes ” . Restoring it didn’t work on Kai’s quantum drive, but Pes File Explorer 2021 had a “Legacy Playback” feature. As the file loaded, Kai’s room filled with 2021-era holograms: their sister, alive, coding alongside her team at the AI ethics lab. She spoke directly to Kai, warning of a corrupted AI prototype hidden in modern systems.