Ultraboy holds on as long as he possibly can....

As hard as Ultraboy tried to put off his own climax, he was powerless to resist as Alina's pussy clamped down on him, Ultraboy wanted Alina to have at least one more orgasm before he came deep inside her and inseminated her. Grabbing Alina's tits to use them for leverage, Ultraboy got himself balls deep inside the young Asian beneath him.

"Holy Fuck you're tight! Oh God, I can't hold back anymore! FUCK!!!!"

With one final thrust, Ultraboy positioned his cockhead against Alina's cervix and roared over her head as his incredibly potent and powerful semen flooded the defenceless girls womb. Dr Bluder smiled as she looked at her extremely sensitive body scanner that she had created with bits of technology stolen from various labs across the country, the scanner allowed Dr Bluder to watch the insemination happen, she smiled as she saw three eggs surrender to Ultraboy's spunk. Once she was sure that none of Ultraboy's cum was going to escape Alina's young body, she called him back to the lab whilst Alina was led carefully back to her cell.

"You did well my ****, another set of triplets to go with the ones your mother is carrying. However, I still think there is room for improvement, so I have a gift I would like to give you, would you be willing to accept of course..."

"Anything for you Mistress..."

"Good, this injection will improve your staying power so that even the tightest, most virginal, pussies won't make you trigger early."

Applying the tourniquet to her slaves left arm, Dr Bluder found the vein and injected the booster into his arm.

"Who or where next Mistress?"