Ultraboy causes a chain reaction.

Despite his best efforts, the feel of a formerly virginal cunt squeezing him; the sounds of Ultramom and Nishi moaning, screaming, squealing and the less vocal sounds of flesh on flesh; the aroma of sex; the sight of a writhing mound of women beneath him, covered only by the costumes of evil and good; by he could even taste sweat and sex in the air, all of his senses filled beyond human capacity with pleasure fire rose from his toes, from his fingers, from his heart and especially from his dick, leaping to his brain, then back, flowing out his dick, along with a river of cum, flooding Nishi's tight hole with a hero's seed.

For the first time, Nishi felt someone cumming in her pussy, straight into her womb, a fanciful notion of impregnation filled her mind, herself round with child, kneeling beside Ultraboy's chair, naked as the day she was born, but rather more developed, waiting for him to feed her, from his plate, or his cock, it mattered naught to her, so long as he liked it.

That image, that thought, as much as Ultramom's experienced (sure, she only made love to her now dead husband, but she'd been fucked a lot, before, during and after their marriage) cunt and Ultraboy's cock made her cum, far earlier than she usually did. Though Ultramom was dragging herself through the dirt to fuck herself on her cock, she still wasn't as broken as Nishi usually made her...partners/victims/beneficiaries? Would that have effect the change that Ultramom was going to undergo? Would being fucked have the effect on her that Ultraboy hoped?

Her cum still triggered the orgasm in the person she came in. Ultramom's scream threatened the sound dampers and stunned Nishi. It was mere moments later that she opened her eyes and saw?