Deltarune Chapter 5 Lore Explained: Decoding the Unused Text
Toby Fox absolutely loves burying his darkest secrets deep inside the raw code.
I cracked open the game files to see exactly what was lurking beneath the surface of Chapter 5. I found a very specific sequence of unused text buried in the backend that directly continues a hidden narrative from Chapter 4. The logs describe someone trapped in absolute darkness, and I spent hours tearing the lore apart to figure out exactly who is speaking.
The Hidden Logs
Before you waste hours guessing what the code actually says, you need to read the exact strings of text I pulled from the backend of both chapters.
The Dess Holiday Connection
One of the main theories points directly to Dess Holiday. You probably noticed the phrase "Don't forget" sprinkled throughout the entire series. It is written on Sans' photo back in Undertale, and it is the exact song you hear echoing from the lake. If you survived the terrifying lake sequence I covered in my Deltarune Chapter 5 Guide: Surviving the Weird Route, you know exactly how deeply Noelle and Dess are tied to that specific body of water.
The hidden text describes someone trapped in a pitch black silence, slowly forgetting who they are. If Dess is literally lost in the game code, she is essentially a fragmented memory. She might even be the source of the scratching noise trying to reach out to the real world. Onion San mentions hearing a song but forgetting it, which lines up perfectly with a lost memory trying to broadcast itself from beneath the surface.
The Undertale Anomaly
Those lines about becoming a collection of memory sound suspiciously familiar if you ever dug through the True Lab in Undertale.
The Memoryheads were the only amalgamates with absolutely no traceable origin. They speak entirely through receivers, dump bad memories into your empty inventory slots, and exist completely outside the normal bounds of reality. The speaker in the Chapter 5 code feels like a direct parallel to those creatures. Kris can never wash away the trauma of what happened to Dess, making her a lingering bad memory. Both characters exist in a strange plane between being dead and alive, represented entirely by the memories they left behind.
Is It Actually Ralsei?
There is also a very solid case to be made for Ralsei or Asriel being the voice in the dark.
If the game operates on a massive time loop, it completely explains why Ralsei already knows everything about the prophecy before your adventure even starts. He might just be living through the exact same sequence of events over and over again, trying to hold onto his memories before the cycle completely resets.
The timeline of the logs strongly supports this idea. The voice in Chapter 4 mentions it has only been a matter of days or hours since they were trapped. If the speaker was Dess, she has been missing for years. The internal timeline perfectly matches someone getting trapped in the dark at the exact moment you booted up the game for the very first time.