AU where the Emperor and Slaanesh are married and males are replaced with futas. (Yep, you fucking read that right.)

(A/N To those who think this should not be written, I don't care I just like writing random stuff and see how they go.)

The Empress was alone, her fight against chaos has alienated many if not all of her friends. She had an army and Clara the Sigallite, but with no romantic companionship, she was lost. It just so happens, however, that Slaanesh was nearby and felt her need for love. Seeing an opportunity that she can prank the Empress she disguised herself as a simple woman and seduced a horny Empress. The lovemaking in their room was of such epical proportions that anything that wasn't in a 30-mile radius orgasmed. Even after Slaanesh revealed herself, the Empress simply shrugged and anally destroyed her. Afterwords in orgasmic bliss Slaanesh muttered out if she wanted to get married. The Empress responded by slamming her pussy on Slaanesh's cock and said "Yes" They soon got rings for themselves made from warp stuff.

Now it is the Year of M30, The Great Crusade was about to begin.

However one can choose to choose a different time period if they wish.