The real gambit begins

As the dragon descended, it made its goals clear, it wanted the princess and if it didn't get her, he would destroy the entire continent. Though everyone was ready to raise up arms, she put them aside, quickly and willingly giving herself up to the dragon, thrusting her moderate cleavage onto his scales, causing a perverted grin to rise on his face. Though still a virgin, the ancient fire dragon had certain ambitions as he quickly took her away to his castle, allowing the princess to make quick work of him, turning him into her obedient dog who licked her toes, yet still she did not get what she desired. Regardless of what she tried, the dragon's human form, its dragon form, even IVF, nothing seemed to work and that was when she realised, even though he was now a pathetic and drooling weakling, he was still one of the 7 primal and original dragons who could destroy continents.

If she wanted to have his child, she would need to thin out his bloodline. The new plan was set and things were put in motion as she ordered him to go fuck the only female primal/original dragon, the dragon of life. Though a tough battle, with the commands of his dominatrix wife, he did not back down, winning and fucking her, causing the 2 different and uneven energies to go rampant in the child's body. To fix this, the princess used her determination to create magical tools that would bring harmony and independence from said tools, working all the way down to wyverns. Though it took a while, constantly cucking the primal fire dragon and even making him watch as his sons and subsequent descendants had their way with their immortal mother, it finally happened, the princess was pregnant. Both of them yelled in joy after hundreds of years of trying, finally giving the princess her long wished upon dragon bloodline.

Only after getting her wish granted did she give back to her dragon husband by letting him fuck his descendants to increase the dragon bloodline. Or at least that was what was planned until the children seemed to be getting weaker, leading the princess to change things up by having her descendants fuck a humanoid ant colony, gaining the ability of pheromone control which was used to enthral the other 6 primal dragons, gaining the ultimate bloodline.