A special birthday

At the lab there was a growing excitement brewing. Even Melissa could barely contain her excitement as Mei bounced around the lab in a maniac glee. Today was the day that their first three slaves would truly grow and be free to walk on their own two feet permanently. More importantly they would now be able serve their Master Izuku permanently.

“We’re seeing the final vitals coming green, brain activity is normal, Mei I think they’re ready.” Melissa explained, looking to her lab partner who was now hopping on the spot in glee.

“Start with the pink one. She’s fun.” Mei demanded, tapping Melona’s test chamber.

“As you wish, activating test subject Melona.” She said, tapping the pad. With a gasp Melona woke up from her medically induced coma.

“I’m alive?” She gasped, eyes widening.

“YOU’RE ALIVE!” Shouted Mei, setting off a party popper, “HAPPY BIRTHDAY!”

“I’m alive.” Melona cried, her slime pressed against the glass causing it to break, “AND I’M HORNY!”

The glass broke and Melona leapt out, wrapping her slime hands around her creator’s skin.

“Finally free, finally able to fuck. Fully alive to be a ****. My quirk developed, as it soaks against your skin it turns you horny.” Melona giggled, “like being horny Mommy?”

“But-but the others-“ Mei squealed, as her face turned red and breath began to pant. While Melona’s normal hands reached into her creator’s pants and dug into her pussy.

“Can wait.” She growled with an excited grin, “now come and fuck your baby.”

Melissa for her part just smiled at the display before turning to her other two creations, the succubus and horned woman.

“Activating projects Albedo and Shion.” Melissa said, as the two women came to life. This time the chambers opened before they could smash the glass and they stumbled out.

“All vitals seem good, now let’s test the quirks, Albedo you first. I know the shadow weapon quirk is effective but for now let’s check out your mastery of the mind. You are after all Mistress Ren’s replacement in a worst case scenario.”

“As you wish Mistress Melissa. Shion orgasm.” She ordered to be met with an ear splitting erotic scream.

“Excellent now enter her mind.” She ordered, Albedo’s eyes turned to her sister and stared into her mind.

“All seems well with my quirk mistress but Shion’s mind seems to be, unstructured.” She explained, Melissa raised an eyebrow.

“How so?”

“She remains rather dim, she’ll be incapable of serving as an effective secretary.” She said, disappointed.

"But-" Shion cried, tears flowing.

"I can still serve Izuku right? I'm still strong enough to be a hero, and hot enough to fuck surely I can pleasure him." She cried, wrapping her arms around her body in such a way as to show off her body.

"I don't think they'll be a problem Shion, though you three may have a new sister." Melissa replied much to Shion's happiness, "And it looks like you did just fine Albedo."

"I live to serve my Master and my Mistresses." She replied, with a gentle excited smile.

"Excellent, as you should be." Melissa replied before sparing a glance at Mei and Melona. At this point Melona had Mei spread out of the floor legs spread and her head eating Mei's pussy. Hands of pink slime groping her mother's tits raising her to greater heights of arousal.

Getting excited Melissa simply laid back on her chair, and stripped down to her bare skin. Excitedly luring her two new creations to gaze upon her newly enhanced body.

"Now girls it'll be a while before Master Izuku returns home, and we can handle your applications to U.A. later, for now why don't you come here and give Mommy a fuck." She purred, delighting over her power over these women.

"It'll be our pleasure."

A/N: Thanks to Vargas for the idea of a Mei and Melissa chapter. New ideas are welcome as usual, I think I'll do about four to eight of these one shots but we can return to the idea later if there's a mood for it.