As Ben Tennyson mutated into Humongosaur a surge of unforeseen power coursed through him

Gwen Tennyson watched with captivated eyes as the alien began an unprecedented unbirth

His body contorted in ways unthinkable to humans a raw display of alien form

The air crackled with erotic energy as the process reached its zenith leaving them both changed forever

Gwen felt an unbidden urge drawn to the primal display

The unbirth was not just a bodily change but a otherworldly awakening

Their bond deepened under the veil of this illicit act

The memory of the unbirth would linger them a hidden shared between cousins

It was a moment of obscurity and revelation

Their connection forever branded by the alien experience

A bond formed in forbidden desires