In the Crimson Moon Embrace Summer Event storyline, it was possible to clearly learn about some obvious differences between the original world... or rather, the Honkai main world for now, and the Honkai main world.
In the world of Crimson Moon Embrace, everything that should have happened had already happened.
Kallen had died on the execution ground, and Otto had always been searching for a way to save her.
But in this worldline, Otto had chosen a different path.
There were still biological experiments, still clones, but in this world, every experimental subject infused with Vishnu Honkai Beast genes had failed.
And Otto of this world had chosen another path.
Experimental Subject A-872.
In this world, Otto had added the energy of the Herrscher of Corruption to this experimental subject, giving birth to a... very unique subject.
An individual possessing a bacterial Honkai Beast.
This individual could inject bacterial Honkai Beasts into those whose blood she drank. Within forty-eight hours, the victim would be transformed by the bacterial Honkai Beast into an individual that was half Honkai Beast and half human.
However, the infected would lose most of their senses, their memories would become blurred, they would develop the same bloodlust as A-872, and they would share her life.
Otto named this experimental subject Theresa.
After that, Kallen was incompletely resurrected.
As Theresa's thrall.
That was what had happened in the Crimson Moon Embrace storyline.
Xu Yanwu still remembered that Otto had appeared at the end of that Summer Event.
The Otto on that screen had left a profound impression on Xu Yanwu with his green-colored text.
This is not your fault. No matter which choice you make, the worldlines will ultimately converge upon the ending of Kallen's death.
I know that better than anyone, and besides... I have already