Sun and moon eclipsed

[Guest Father goose]

Once every thousand years solgoleo and Lunala with their daughters must go to necrozma and perform sexual intercorse with the crystal legend to keep the ultra beasts away while also siring new generation of Lunala and solgaleo. This involves necrozma  impregnating both mother and daughter then once the mother is mid term necrozma absorbs her while fucking the daughter (your choice for which pair goes first) then ounce both mothers are absorbed ultra necrozma fucks the young pregnant  legends that have become aroused to the sight of their mothers being “eaten” then both give birth to twins, this will shock necrozma for never before have twins been born from the celestial legends, but this does meen he gets to absorb double next time and tells this to the two celestial Pokemon which makes them cum at the thought.

lunala and solgaleo must be anthro with large breasts, ass and broodmother hips, and be aroused to being “eaten “ by necrozma their daughters proportions at first must be smaller than the mothers, but swell when impregnated.

Necrozma might also use the two legends as sex slaves for himself To enjoy for a thousand years then eat them.

[Guest Father goose]

Or you can have necrozma needing to revitalize his energy to keep ultra space alight and warm, with solgaleo and Lunala giving themselves to help him recover in exchange impregnate with children.