you know there are people out there that still think Omori is the same person as Sunny-
and that Sunny doesn't have DID-
and that Omori is a fun kid friendly game :3

Yesss

Some people *gestures to the people that I was just talking about* are dumb.

Henlo :3

hai

TECHNICALLY Sunny doesnt have DID, as you can only get DID from severe repeated truama from while you are younger than 9 years old :3

I've done research and its not always repeated Traumatic events- some times just a single event is enough to cause the brain to split creating DID or any other Multi personality Disorder.
and the Event of Accidentally Killing Your beloved sister at a young age I believe is traumatic Enough-
And Headspace is Similar to the Mental world most patient with DID Report having. and Omori would be Sunny's Alter that developed when the Traumatic Event Occurred. and All of the Headspace counterparts to the Real world characters would be like Proxies for Omori.
and I believe that in the white place with the lightbulb when you have to cut your self to wake up- in the white room you are Sunny and Not Omori, and Omori is the one out there adventuring- while Sunny is in the White room being a smol sad boi :-:

Actually- If I dedicate enough time to this theory, and went through the game some more and learned more about DID I could make a Theory worthy of Mat Pat him self...
Now I want Mat Pat to do an Omori Lore Theory :-:

or maybe its just Dissociate Amnesia...

Look, the fact that you just said that Sunny is in White Space and Omori is out adventuring already is a contradiction. The fact that people with DID have internal headspaces is true, but no matter what, there is always at least one alter using the body at a time. The fact that Sunny doesn't switch while he is conscious, wake up with Omori fronting, means that this is not DID. One of them would have to be in the mental world and one would have to be in the body, and Omori only shows while Sunny is asleep. People with DID also experince an amnesiac barrier, but Sunny does not experince this. We know this becuase Sunny knows what he did, and wont forget it, which is why he becomes a shut in. If there was an amnesiac barrier Sunny would be able to continue with normal life (sort of) or Omori would continue the normal life for him, neither of which happens in the game, and this is proven by Kel saying that Sunny never goes outside anymore.

I never Said Omori was the Only Alter.

Your right about the Amnesia Barrier-
But Explain how the character Omori came to existence...
Anyway... Im gonna start working on a Theory for this and probably turn it into a Google Slides or something-