I took a look around your head.
And I discovered something.
Something about the New Cyclops Serial Killings...

Apart from Ota, there are four victims.
Shoko Nadami...
Renju Okiura...
Iris Sagan...
And So Sejima.

Who was responsible for these murders?
Shoko was stabbed by Renju with an ice pick.
Renju was strangled to death by Iris.
So cut open Iris's body.
But who shot So?
It was you.

In other words, all of these murders were committed by different people.
There wasn't just one killer.
That's how it looks on the surface, anyway.
But...

...

That's not the truth, is it?
There's only one culprit.
One person.
And that person is...

Yes, you.
The person infront of me right now.

You're blaming the commander of ABIS for this?

No, not Boss!
The person inside Boss's head!

Can you at least try to make sense?

All right, I'll explain.
You know about the abandoned chemical plant in Kabasaki?
There's a prototype Psync machine there.
You used that device to swap around bodies, one by one.

In other words, the entire "egg" ends up being replaced.
Mind, consciousness, memory... They are traded. Switched.

...

I don't know where it started.
But at some point you got into Shoko's brain.
Then, you got into Renju's.
And got rid of Shoko's body.
After Renju was Iris.
You strangled Renju using Iris.
After that, into So...
Who you used to kill Iris and Ota at the cold storage warehouse.

...

...

Now...you're in Boss's body.
Inside her head.

...

...

...

I see.
If you know that much, then I have nothing left to hide.
Yes, I am the culprit behind the New Cyclops Serial Killings.
I guess you can call me the New Cyclops Killer.

Before I do, there's something I want to hear from you.
How did you know about the prototype Psync machine?
And not only that...
You also seemed to know what the Psync machine is truly capable of.
Why is that?

That's...

...

...

Regaining your memories, are you?

...

Human memory is fractal.
If you retain even a single piece of it, it's possible to recreate the whole thing.
Pieces of memories are like roots that grow into every corner of the brain.
Gradually, slowly, taking its time...
I imagine the same thing is happening in your brain right now...

A fractal is a figure with self-similarity.
Allow me to explain.
See this?
Whichever fragment you cut, you will see a similar shape.
The whole is made up of similar parts.
This is called a "fractal figure."

Memories in the brain are similar. That is what he is explaining.
He is claiming that from a few pieces, you can rebuild the memory.

I knew about the prototype from regaining my memory... Is that...right? No...that's not it...

Parallel worlds exist!