That's already the plan!
Cosmoem (Nebby) Kubfu and TYPE: Null will all evolve during their breeding scene
A chance to knock up our own AU? Makes me have a crazy idea of our Pokegears being cross dimentonal and her not being a Legendary whore and more like a twin to the brother of a sister we didn't know we had and in the same chapter same sister sees us return and joins our harem. Maybe? I'm just spitballing cause idk how you feel on "selfcest" and "incest" so I will 100% understand if you don't do either