Later

Decades passed, with Nimrod's and Kia'an's bodies failing to age. None were like them, even when they obtained transformations with the help of Nimrod and Isha. Generations aged, but Nimrod and Kia'an remained the same, leading the cult as it expanded further down, inhabiting the world's mines. It had been a long time, and many trials had been overcome, like Tzeentch's self-sabotage exposing his people, but Nimrod continued through all this trouble, waiting till the promised day of deliverance came. On that aforementioned day, a warp storm crashed into the world, with its planetary governors and other essential personnel long since leaving. At that time, Nimrod's army of billions rose from under the world; his people had spent ages becoming self-sustained, and this allowed them to grow in secret.

Now that the warp storm was here, there was no longer a need to hide underground, and so, Nimrod's hoard soared out during the panic, awakening their gateways to the Warp.

The world was unable to hold back after evacuating anything useful, including the Planetary Guard's best. That's where Nimrod met Calista; she was a Genestealer from the Aberrant group in their cycle. Calista was stunning; she was like a fourth-generation Genestealer, but even more human. Under Nimrod's new laws, he ensured they didn't sacrifice and kill random people or eliminate babies that went against someone's standards. Calista was one such person; she wasn't only an Aberrant, she was so human that her DNA couldn't be controlled by the Tyranid Hive Mind. Moreover, as she got older, she hit a sort of second puberty, leading her right arms (that looked extra Tyranid) to combine into a still Tyranid-looking arm, but only one on her right side, and it had 5 fingers, though they were sharp and fingerprint-less. As for her hair, she grew a nice, long set of black hair tied up into a ponytail, and as for her size, although initially big, she began to put on a more female look, with large tits, thighs, ass, and a slender waist. She was still tall, but she wasn't as bulky and bulging with muscles, making her scorned by her Genestealer familia for not even fitting into the mould of an Aberrant.

Yet, this didn't stop Calista; instead, it incentivised her to do better, using the powers of the four to gain basic boons. Khorne gave her more strength, Nurgle gave her better endurance, Slaanesh made her form more sublime, thus easing her pains, and Tzeentch enhanced her psychic gifts. As a giant with mouth-watering abs, she still fell behind normal Aberrants by a smidge, but her Tyranid arm is stronger than the three arms Aberrants usually possess, and, timing this with her psychic powers, she easily became one of the strongest people on the planet.

Soon enough, the planet fell, and, after a lot of talking with Kia'an, Nimrod had his second wife lined up and ready. All it took was a bit of asking, and Calista accepted right off the bat, venerating Nimrod as a saint, making Nimrod realise that Calista wasn't even considering seeing him in a romantic capacity. As such, although Nimrod had to prepare his people for the "great journey," he spared some to get to know Calista, and she him. They talked about the universe over dinner, drank wine on the roofs of skyscrapers, and went out for picnics or similar bonding experiences with Kia'an as well. Each time, Nimrod asked Calista how she saw him, in one form or another, and each time she'd give a slightly different response. First, it was "great leader" or "saint," now it's "husband" and "cutie-pie." Moreover, it was a good reprieve from the warp storms harking at this world, soon to end and bring an Imperial execution with it. Although Nimrod could stick deep into the planet and buy time to possibly escape into the Warp, his debt was repaid, and the 'payment' was soon to mature, so there was no need to stick with Chaos. As such, Nimrod prepared his best people of strong minds and able bodies, creating massive ships held together by psychic powers, just until they could get proper schematics and engineers.

While that was happening, Nimrod enjoyed his time with Calista and Kia-an, loving their enveloping touch as their mass swallowed his body, engaging in sexy lesbian fun as he fucked them whilst being the ham to their buns. With every thrust, one or the other would be thrusting and jerking to excite the other's nipples or mouth while Nimrod went in and out, getting slammed back in with **** before he could fully rise, making him more exciting than an electric horse dildo.

When Nimrod wasn't around, these sister wives got closer than ever. If Nimrod were to die, they would be heartbroken, but they would more than find comfort in each other's arms. The harmony of these mutants was unmatched; the girls were so united in their love for both the other and Nimrod that Tzeentch, Slaanesh, and Khorne were able to use Warp trickery on Calista, allowing her to transform into different Tyranid forms, with only minor influence from the Tyranid Hive Mind, and a lot more sexiness, muscle mass, and tit/ass size. Nimrod's wives immediately boosted his power with this boon, and allowed Nimrod to gain more sparring partners to help him train.