Coventina continues to be way hornier than her usual resting state until, with a lurch in her guts, it begins.
It hurts, coming out, but that doesn't stop it from making her cum. Her body seems to have no trouble pushing it out of her womb without her conscious input, but it still takes minutes upon minutes of orgasmic clenching before the smooth black surface of the egg makes her vulva bulge outward before revealing itself, stretching her wide as it emerges.
She gasps, jolting as the mana circuit breaks and the paralysis lifts while she's still cumming, slapping a hand between her legs and rubbing furiously as she shudders in ecstasy.
The egg is about half the size of a basketball, smooth black, and egg-shaped.