You are an Astartes of the third legion "The Emperor Children" you were one simple astartes that thanks to your amazing job and beauty you have been promoted as one of the Phoenix guards the Astartes that protect Fulgria.

This would be your armor from now on you are honored to have the best equipment of all the marines, the storm bolter, power fists, power swords, all of them free for you to use, but most important the honor of being aside of your primarch, you want to earn her trust, and love, from now on you'll give the best to be the perfect Astartes for her.

Fulgria is starting to be different everybody noticed it, you as one of her nearest Astartes could notice it, she is acting less than herself, you have two options, keep corrupting Fulgria and make her kneel against the chaos God of excess Slanesh of help her to stay loyal to the Emperor in order to save humankind.