Empress of pleasure.

Before the Empress was created, the Emperor had already concourd Terra (Earth). So now it was time to concour the rest of humanitys colony worlds they had during the dark age of technology and retrieve her sons. The crusade had begun.

The first target was humanity's very first colony world, Mars. There she met the Cult Mechanicus. After a conversation with they're leaders, they came to the conclusion she was they're god. The Omnissaiah. Unlike the Emperor, the Empress of Pleasure had no issue with them believing she was they're god. She did have another problem. The Mechanicus believed flesh was weaknes and wished to 1 day become robots. Since robots can't feel pleasure, this deeply unpleased her. However she needed the Mechanicus's help. So she pretend to be ok with this and the Mechanicus became the Adeptus Mechanicus.

A big difference from the original timeline is the Empress didn't hate religion. As long as you didn't worship 1 of her brothers or your religion could never become a threat to the Empier, you could believe what ever you want. As such planets that fought the Emperor to protect they're rite to religion in the main timeline peacefully surenered to the Empress.

Another advantage was that since the Empress can astral project an human sized Slaanesh clone, she could be in 2 places at once. While her main body was out fighting and doing diplomacy, her projection would advance humanity technologically. She made many great strides. Her greatest invention was a pocket dimension similar too The Warp she dubbed The Still. (There is no Still in normal Warhammer. I made it up myself.) When humans die, like most creatures they're souls would enter The Warp. However the Empresses greatest enemies live in the warp. So to protect human Souls, they would now be sent too The Still where they could spend all of eternity in peace and pleasure. Some humans would fall in love with they're alien slaves and ask the Empress to let they're souls into The Still aswell. However she would only allow this if the alien had been with the human for many years and showed genuine love for they're human master.

By the end of the crusade she found all her sons. Some she cept men, others she turned into women and some where even tured into futa's. Also with Erda around the Primarch's where treated better then in the original timeline.

Prohaps the biggest changes in this timeline is that chaos gods and demons in the warp is commin knowledge and religion is allowed. So Horus knew to be warry of the warp. Also Lorgar didn't feel discriminated for being religious. So the 2 biggest reasons the Horus Heresy happened remained loyal to the Empress.

During this time, she was working on giving humanity acces to the Web Way. The space between the material plain and The Warp. This would give humanity access to faster then light travel without having to deal with the other demons. However while recklessly telaporting to tell the Empress about a potential assassin, Magnus destroyed the machine. This not only ment she would have to start all that hard work from scratch, but this also made it easier for demons to escape the warp. Like the Emperor, the Empresses of Pleasure sat atop the golden throne too try to limit the demons advances. Since shes stronger then the Emperor, she had enough energy to do this and astral project Slaanesh. She used her projecgion to help fight the few Primarch's that did betray her. Also since she didn't have too fight Horus, she didn't end up like a zombie. Do too this, the empress did not need 1000 psykers fed to her every day, so there are way more human psykers then in the main timeline.

However she was **** to get off the chair. So she outlawed all religions besides the worship of her so she could get more power. She created the inquisitor's too enforce these new laws. During this time she managed to finish the machine too allow humans into the Web Way. Humans still have too deal with Aeldar but that is vastly preferable too dealing with deamons. After 10 thosand years of worship, the Empress was able too leave the chair. She left a crystal made of pure energy to power the thrown.

She now continues her rule over humaity and the new Slaanesh demons. If she knew about the main timeline, she would laugh in glee knowing her Empier is supirior to if her human half didn't fuse with her demon half. Do too her having an entire species constantly giving her power and also having the Emperor's power, she is the strongest choas god by far. Even though if the 3 other choas gods all faught her at once she'd lose, she's still stronger then the main line Slaanesh has ever been. If she knew this, it would also bring her grate joy.

(Empress of Pleasure POV)

You wake up, your loyal and loveing wife lieing next to you naked and heavily pregnant with more of your children. You get out of bed and look over Terra. The economy is thriving and the people are happy. You look up to the stars and imagine the other planets in your empire are doing similarly well.

You also know that even though your empier is strong, the other Chaos Gods working together could take it all away. Also there are other factions like the Necro's and the Tyranid's that still pose a threat. However your imens pride quickly dashes these fears away. Of course you and your empire will do away with these threats some day soon. It might be a little early for that statement, but if this pace of growth continues, maybe some day that staiment won't be so outlandish.

(Hey everybody. Hope you enjoied this Lore I've added and that it will inspire you too add your own chapters. I'm not planing on adding more lore focusing on the Empress of Pleasure, but if you think theres something that could be added, let me know in the comments and I may change my mind. Please drink plenty of water and get some sleep.)