At first, the succubus that was summoned believed the woman who summoned her would be an easy bit of prey - a complete and utter virgin who was as vapid as she was innocent... in spite of her body which was clearly built for the sole purpose of sinning.
However, as the succubus tried to move beyond the point of summoning she found herself faced with something no other human ever thought of actually doing. This pesky, insignificant girl had somehow managed to complete the bindings that forced her into total obedience to the person that summoned her!
Oh, if only that was the worst thing she would experience that fateful night...
Despite her seemingly innocent wording and vapid expression, the girl knew far more than she led the succubus to believe, and knew that succubi carried excellent genes. Genes which she could use to bring about her own personal nightly fantasy - a sex-fueled apocalypse where she becomes the mother of legions beyond comprehension, plunging the earth into an eternal hell of seduction and breeding as she produces countless half-breed daughters, each more of a perfectly fertile bimbo than the last.
In due time, more succubi would be summoned by the innocent, vapid broodmother, and each would quickly be enslaved to her own incessant desire for more perfect genes.
Finally, she would manage to summon out the succubi queen, and with a single moan from her immaculate, pillowy lips, she would seal the fate of all succubi with a single kiss, and become the new Succubi Empress, transforming the galaxy, the universe, reality and beyond into nothing more than mere nurseries for her babies, each of which now mature quite rapidly and breed explosively, flooding an infinite amount of infinities with their all-consuming, lustful offspring.
And as if that wasn't enough, the Succubi Empress turns to her collection of succubi and giggles with glee.
During her time reigning over these realities and beyond, she had learned better techniques to not just summon more succubi from other dimensions and planes of existence, thanks to the knowledge obtained from her many many daughters that populated more than everything, but she also learned ways that wouldn't just use the bindings to ensure the succubus would be 'hers', she didn't need those anymore. Any succubus summoned, whether she had somehow never met her, or she was millions of generations away from her initial offspring, no matter what, they would follow their new Empress.
Meaning she could focus on having the succubi truly go all out, truly breed to their maximum potential and further, truly having them help her take control over more. Round one was just a warm up.
Round two was the real beginning, the end, everything in between, everything BEFORE time and AFTER it. Places with literal zero space would still have to hold her offspring. Physics themselves bent to her will. Every atom would now double as an hammerspace dimension that was, on the inside, as big as the tiny, initial existence she found herself in, and every atom inside that new hammerspace dimension would follow that rule too.
With her summoning powers, she was not limited by the dimension changes, the succubi inside the atoms, no matter how 'far removed', were never outside of her reach. And they'd always be the perfect size for her. Now, where was she? Oh right, she had just started Round 2. A lot of work ahead~
(Had to go REALLY crazy with this one because otherwise there was nothing to add to the already very complete story/ask, so yeah, what I wrote is a bit silly!)