Author: Djibriel
{oOo}
At first Horus was relaxed as he wandered through the city, watching the happy people. They seemed to be celebrating something. Whatever it was, had to be epic, because from what he could see, the entire world was full of joyous celebration.
Horus followed the festively clothed children and their families to... a great cathedral.
Making his way inside, he saw, an entire set of gigantic pews being occupied by many of the Primarchs, who did not look happy. Curze was frowning, Mortarion's face stoic. Angron was systematically tearing a piece of scroll to pieces. Vulkan was holding a pair of rings. Perturabo was looking critically at the cathedral and frowning at the airy construction, the wide glass windows. Of all the superhuman beings here, only the God Emperor was proudly beaming at Lorgar, who was uncomfortably reading from a large book of scripture at the altar. He did not look comfortable, but smiled back hopefully as one of Fulgrim's men played the gigantic organ, beginning a… wedding march?
Serenity, smiling radiantly, made her way down the aisle.
The rest of the dream? Vision…? Spiraled down into nightmare as Horus finally got a good look at the groom.
It was that chaos-cursed pervert, Mamoru! The primarch felt his blood rising to a boil and his vision swam before his eyes as Lorgar began the vows.
"Do you, Mamoru, also known as Endymion, swear to take Serenity as your lawfully wedded spouse..."
Horus's vision turned red with rage. "Don't even think..."
"I do." Mamoru said with the smarmiest smile Horus had ever had the bad luck to see in his entire, very long life.
AGH.
"Do you, Serenity, take this man as your spouse, in sickness and health, in wealth or poverty, until death do you part?"
As Serenity said "I do," Horus was already making his very angry, very fast way over to Lorgar to punch him in the face before this disaster became complete.
Unfortunately, it was a long way to the altar and felt even longer as Horus RAN as fast as he could.
"Speak now, or forever hold your peace." Lorgar read from the text reluctantly.
"I OBJEEEEEECT!" Horus screamed... And woke in a cold sweat, still screaming.
"It was just a dream." the Primarch said, dazed, as he tried to calm himself.
{oOo}
The next morning, Horus watched in mounting horror as Mamoru asked the Emperor for his permission to court Serenity, and the emperor... said yes.
Actually, he said "IF SERENITY WISHES TO ACCEPT YOUR COURTSHIP, UNLESS SOME FAULT MAY BE FOUND WITH IT, I CAN HARDLY SAY NO."
Of course what Horus heard was 'Yes'.
{oOo}
A day later, Horus initiated the Heresy.
Barely three weeks later, he took over Terra and attempted to murder his father.
{oOo}