The ending

So... I foresee a few possible potentially satisfying scenarios:
1- Cain ditches Jooin and seduces Jahwi. Cain tops. Obviously.
2-Jooin ditches em both and only takes em back in a threesome. Cain tops Yahwi who tops Jooin, so Yahwi is the sandwich. Obviously.
3- They die in a car accident while fighting over top rights. They are reborn as seahorses so Jooin gets to carry both their babies (also works with the omegaverse).