A new Breed of Shoulders Rise

Osiris the first of the new breed.
Throughout years of training and surgery,
Osiris has awoken.
"Was the test successful? "
Osiris asks as he looks around the darkened room.

"Yes. You have now became an Astartes. Do you still have the memories from before the surgery? "

Osiris was the only one of his home world to volunteer,
for this test within the Astartes.
None of the other Astartes know about this,
nor did the Emperor himself know.

"Odin? Is that you? "

Osiris was born on a dying planet.
In the terms of the Imperium, a death world.
The process to do this test, was to remove the soul.
It's been done before, but for the dark gods will.

With this test, the new breed of the Astartes was born.