“This is why we need more rules to be established in the ‘Laws of Robotics.’ We could not fully grasp what they could do in the past but now we have a better understanding of how far we advanced in technology, the laws should advance as well. We also need to consider the future and extrapolate our robotic laws as well. Any questions?” 

Alex had just finished his dissertation for his fourth doctorate at MIT and it was time for the other professors to question his paper. It was one to add more laws to all robotic technology in the United States and beyond.

“I do have one.” A professor stood up in his robs. He was in his late fifties and a little pudgy.

“Go ahead.” Alex replied.

“I’m glad that is over.” Alex gave a big stretch as he walked on MIT's school grounds. “That is always the worst part. Explaining more than you have to get approval, it is hard on the unfortunate with public speaking. We need a new way for those people.”

“Professor Alex.” Someone yelled out to him as he was going to the parking lot. He turned around to see who it was. It was two girls from one of his labs for the master programs he was teaching here. “We have a question for you.”

“Sure, what is it, ladies?” Alex stopped and waited for them to catch up to him. It took the girls five seconds to reach him.

Alex had become a professor at MIT two years ago when he had turned eighteen years old and earned his first doctorate. He continued his education there to grab more doctorates in technology, engineering, and computing to become highly esteemed as he taught there. He was now 20 years old at 5’7” but was sure that he would be an inch or two taller if it wasn’t for an incident.

“We were researching something off topic from what we were supposed to be researching. Girls talk, that sort of thing.” Rachel, a 24 year old African American woman with an excellent mind for robotics. She was 5’5” with a nice body and let her naturally curly hair free for all to see it’s natural beauty. “We came across one thing that we had to ask to see if it was true.”

“What is this thing that was outside of your coursework that I can help you with?” Alex already knew what it was going to be.

“Is Amber Goldsmith related to you?” Rachel asked.

Yep, they were asking about his sister.

Amber, from the incident from seven years ago, had turned back mostly to her normal self when he activated the ‘Emergency Signal.’ It was a triumphant moment for him to have built those into the Nanobots. There were a few kinks in the return back to normal because of the cat DNA that was mixed in with their DNA but it turned out to be acceptable. The acceptable thing being their height. Amber was 7 feet tall when the Nanobots left her body. Amber was grossed out by the way her body behaved, what it became, and what she did in that form of a catgirl. She couldn’t excuse what she did but she was happy with the results in the end. 

“Yes, Amber Goldsmith is related to me. She is my older sister.” Alex confirmed the girl's suspicion that the woman basketball star was indeed his sister. Amber had reached a level of stardom and attention she was seeking upon returning to semi-normal being above average height to rise to pro athlete with catlike reflexes. 

“Woah. That is so cool.” Aanya replied with big eyes. She slapped Rachels shoulder. “I told you it was true.” 

“Ow, I know you said that it was but I had to make sure.” Rachel turned to Aanya. Unhappy with her slap. Aayna was a 24 year old Indian woman at 5’9” with her braided short black ponytail. She would be pretty nimble looking if it wasn’t for thick butt. 

“How are you normal heightish while she is so big?” Rachel returned her attention back to professor Alex.

“My mom is pretty tall and my dad is average. So I got my height from my dad and Amber got it from my mom.” Alex answered her question. He couldn’t tell her the real reason. 

“Makes sense.” Rachel said. 

They talked a few more minutes before Alex had to say enough and head home. The girls waved good and Alex walked to the parking lot where his car had come to pick him up. It was a Tesla that he had upgraded with his own inventions and upgrades to the software. He opened the back door and hopped in.

“Alright, Newton. Take us home.” Alex spoke once he buckled himself comfortably in the back. 

“Affirmative.” The computer replied as it made a hologram projection in the driver's seat to trick people that there was a person driving the vehicle. 

Alex pulled out his phone and went to his photos. The conversation reminded him that he would need to call home sometime. He would call them after the board approved his dissertation. He looked at a photo that was taken a few years after the whole incident. The photo involved only his mother, his father left a few months after the incident because he was afraid for his life. Alex couldn’t blame him after the Nanobot tampered mind of Amber forced him into a catgirl. He had every right to be scared of what his son could create. Alex was able to get him mostly back to normal as he was the shortest time transformed but he had a few inches added to his height. It was sad to see him go, leaving them there, but Alex could still provide with his inventions. He created less stuff but was still making money off of patents.

The picture of his mother was her in front of her new home in the desert. Ava had been some of the largest amount of transformation and it showed. She was 10 feet tall with 94F 60 102 with smooth skin and golden blond hair. The transformation back had seemed to rejuvenate her a lot so that she was healthy and very active in her fifties. She picked up gardening and had a few cows on her property. Ava enjoyed it but Alex thought she liked basking in the sun there because of tan skin. The main reason she was out in the desert was to hide from people because of her height and what she had done at 99 feet and 9 inches as a giant catgirl.

Ava had been ground zero in catgirl Amber’s mind to create people into catgirls and mouseboys. They had gotten quite a few people transformed but Alex had reverted almost all of them back to normal. He had one girl who wanted to stay a catgirl. This group had no side effects by the method of how they transformed so it was a relief that Alex was able to pull it off. Ava was still worried that these people would hunt her down because of what they did to them. Alex had to pay millions of dollars because of the incident and pay for hospital bills for ten years by court orders. 

“That will be over soon, I only have a few more years to pay for that stuff.” Alex put the phone away and opened his laptop. He was going to get some work done as his modded Tesla drove through traffic. 

It was a little while in the ride that he got a phone call. Alex read the caller id and picked up the phone.

“Hello, Maria. How are you doing?”

“I’m doing well. About to get off a photoshoot so I decided to call you. How did the dissertation go?” Maria asked. 

Maria lived in California. She had moved there after college. When the ‘Emergency Signal’ was activated, she transformed to more of her normalish self and had to cross the border back home. It must have been the distance, but when she came back, she still had bleached white hair. Maria was now a 25 year old model in LA with a huge instagram following. She was 6’6” with 48F 32 46 sizes. She was a star right off the bat for a model. She took acting class and found herself in a few movies. 

“It went well. I’m definitely going to get the doctorate. It is just a matter of time of how long the board wants to be slow about it. They couldn’t punch a hole in my thoughts and calculations.” Alex spoke smugly. 

“That is good.” Maria replied. “We don’t want anyone to get hurt by the same mistake we made. Did you mention that in your paper?”

“I did not. I believe it best to keep it under wraps for a little longer. I don’t want the world to discover it  yetand hurt the girls when they are not ready for the harsh nature of the world. They need to be a little bit bigger before we mention it”

The girls he was referring to were Amber’s, Maria, and his dad, when he was a catgirl, children. They had been born into this world by the assistance of the Nanobots creating the expedited forming and growth. Alex wasn’t going to eliminate them because they were living beings and his children. They had their own free will. Alex also couldn’t remove their cat genes because it was so ingrained in their bodies. It would be forceful change to them like how he accidentally forced his family to change into catgirls so he did not think it ethical to do that to them. So, they let them be. The ‘Emergency signal’ had forced Maria’s children to revert back to their old selves before they consumed the Nanobots.``

“They are teenagers now.” Marai called out their age. “Shouldn’t they be old enough to let the world know about them?”

“They need to be in their old teen years. I think when they are more adult in years that it would be fine to let the world know. They can decide more on their own then.”

Maria’s children reverted back to the age they would be a few weeks after Maria gave birth to them, leaving them a little older than Amber’s children. From that point on, the kittengirls grew at the normal rate that a catgirl would have, which was accelerated compared to humans. They had reverted a lot of the cat genes to humans in the ‘Emergency signal’ but kept a few traits of catgirl, mainly the ears and tail. In the seven years, the girls had grown to be around 14 years old, soon to be highschool. Maria and Amber both raised the kittengirls from that point on with Alex helping financially at the beginning. With them both being successful, They had most control over them but still went to Alex for advice on catgirls and their status in the world as Amber and Maria raised them.

“Why can’t they decide now? They are pretty mature and they need friends.” Maria complained. She was worried about them. “They are cooped up in this house for a long time with limited contact with the outside world. Wouldn’t that hurt their growth and preparation for when they come out.”

“It would but it could also get them exploited by others. I don’t want that for the girls. I want them fully grown so they can defend themselves.” Alex answered back. He was concerned for them as well.

“They are seven feet tall. I am sure no one is going to be pushing them around as they still have room to grow. They are going to be pretty tall.”

“I’m sure they can beat up any guy that comes their way but I want them to use reasoning and words instead. They are stronger than humans so I don’t want them hurting people or having the idea that they push people around with their strength.” Alex spoke about his worry of what the girls could do.

“I know. I just want them to have somewhat of a normal life.” Maria sighed. “Speaking of that, we did have an incident like that you mention.” 

“What sort of incident?” Alex got very scared for a moment. What happened on the other side of the continent.

“Lola had her first heat and let us just say that the tutor was there.” Maria was tip-toeing around something that happened during Lola’s first heat for a normal growth. 

He had experienced Lola's first true heat by catgirl Amber forcing it on her with the Nanobots. Alex knew that Lola could get very forceful and violent. The other thing was that Lola was the most catgirl of them all. All of the rest of the children lost most of their features except for the tail and ears, Lola kept the paws and a line of fur going down her back. The paws only reach to the shin and forearms leaving the rest of her mostly human like her sisters, but they still had claws in them. 

“What did she do to the tutor?” Alex had hired a tutor to teach Maria’s catgirls so that they could grow learning like a normal girl would in society. He had chosen him because he was a good teacher and was able to keep a secret.

“It wasn’t really that bad. Lola couldn’t control herself so things got,” Maria paused for a moment, “intimate.” 

“Did he get hurt?” Alex was worried that Lola really went to town on him and that the tutor would have some serious injuries.

“Ooh, nothing like that.” Maria knew what Alex was talking about. “He was scared during it but in the end he said it was fine.”

“That is a relief.” Alex sighed. He was worried about the legal ramification and what it could possibly teach Lola. He would have to head over there and help with any situation. It would also mean that he would need to probably pull out another invention to pay for it.

“I’m concerned though.” Maria spoke and Alex listened. Alex was curious about what Maria was concerned about. “The tutor asked when the other girls were expected to go into heat. I worried that he enjoyed the rough behavior of Lola and is hoping for more.” 

That was very much a possibility from what Maria said. The tutor must of really enjoyed the rough sex with Lola that he was expecting the other three girls to have the same reaction as Lola. It was pitiful of the tutor to be expecting that from the others. 

“I believe that you are right there, Maria. I will go looking for another tutor to teach the girls. We don’t want someone with a new kink to be around them.” Alex knew that Maria was concerned about that with the tutor and so was he. “I will hire a female teacher this time so we won’t have the same results.”

“Thank you.” Maria sounds happy. “I like that idea. What should I tell the tutor  then?”

“Tell him that we are grateful that he came out unharmed. We are worried that the other girls might seriously harm him as they develop at that is a risk we would not like to take. We will be looking for other venues on how to teach the girls.” Alex said. “If he gets angry, mention the nondisclosure agreement. He said everything was fine after the incident so he can not take it to court or anything and he can not speak of it until we say it is okay.”

“Will do.”

The two of them talked on the phone for a while as Alex rode in his car. It was a nice distraction from the long ride out of the city to the countryside. Alex had to end the call when he arrived at his house.

“I will fly over when I can to see them. I have other matters to attend to as well but I do have to talk to the girls.” Alex said “I will notify you tomorrow with my plans.”

“Sounds good.” Maria replied. “Bye.”

“Goodbye.”

Alex hung up the phone as he walked from his car to his house. It was a nice big house with a big lawn in a forested area. It had big hedges around to hide it from view as that is what Alex wanted. It could hide his small lab in the back and hide another thing as well. Alex walked to the doorway and let himself be scanned to unlock the door. He opened the door and walked inside.

“Daddy!” A high pitch and excited yell came from within as he closed the door.

“Girls!” Alex sounded very excited as well as the source of the sound came running towards.

Two big ginger haired girls ran around a corner and came charging straight towards Alex. Alex bent down to catch the two girls running at him. 

“Ooh. you two are getting so big.” Alex caught the two girls and lifted the two five year old girls up with a big heave. “You will either have to stop growing or have to hit the gym to pick you two up.”

“You better hit the gym to pick us up because we don’t want to stop growing. We got to grow up like you and mommy. Nya.” Chloe said stubbornly in a cute way.

Alex was carrying two five year old kitten girls in his arms. They were 4 feet tall. Both of them had cat ears and a cat tail that danced behind them. Alex had mellowed out a lot when these two were born so that he could spend time with them as they developed. He was still a working man but he calmed down from his arrogant scientist self to be more personal and less professional. They said that fatherhood could do that to a person.

“Dang, I thought I could keep you at this adorable size.” Alex gave a sad display to the two girls as he put them down. “Where is your mommy?”

“Upstairs in the main room.” Zoe replied with a bounce in her excitement. 

“She does like the sunlight from that window at this time of day.” Alex looked up the stairs to the main room up there. He then turned back to the girls. “Does she have anything planned for dinner?”

“Not that we heard. Nya!” Chloe answered.

“What do you want for dinner then?” 

“Salmon!” The girls said in unison they wanted their favorite food.

“Sounds like a plan. I just have to ask your mom and I will see about getting it started” Alex answered as he walked to the stair to see their mommy. 

“Yiippee.” the girls exclaimed in happiness as they ran off to play a little bit more before dinner.

“How are you doing, honey?” Alex asked after he got up the stairs to the main room.

In the room, a 9 feet tall ginger haired catgirl was next to a window, soaking in the sunlight. Her smooth white skin glistened in the sunlight. Her three sizes were 82G 40 68. She was busty with firm perky breasts. She only had one pair of breasts, like all the other catgirls now. She only had the ears, tail, and slightly longer canine teeth that looked cute. She had good thick legs that went with her ass. Her legs were pressing against some tan khakis as she sat on a sofa-like chair. She had a blue and white striped shirt on but that was pulled up to her near her shoulders, where her long straight ginger hair fell down to her breasts. The reason for her lifting her shirt, she had a small child at her breasts, sucking for milk.

“I’m doing well, this little kitten was whiny all day that I couldn’t get things ready for dinner.” The catgirl turned to Alex, revealing that she was in early twenties. “I hope that is okay.” 

“That is fine. I wanted to cook at some point. Keep myself useful around here.” Alex walked over to the catgirl. He sat down next to her and leaned over to peer at the baby at her tits. 

“He is a hungry little guy, isn’t he? Probably going to like boobs when he gets big.” Alex rubbed the brown hair of the kittenboy. The six month kittenboy looked up at the person who just touched him to see who it was, letting go of the catgirl’s nipple. When he saw that it was Alex, he returned back to the catgirl’s tit.

“He gets it from you. You always like my big boobs.” The catgirl gave a teasing smile.

“Am I really like that with you, Mabel? You make it sound like I am a scoundrel.” Alex leaned back, feigning being offended.

This catgirl was the old family cat, Mabel. She had been transformed to a catgirl during the ‘Emergency Signal.’ The ‘Emergency Signal’ was set to turn human targets back to their normal self from a stored DNA database. Mabel was a cat with the Nanobots so when the signal went out, it changed Mabel into the most human it can while not going crazy with disrupting Mabel’s DNA. This resulted in a 15 year old catgirl that had spent three years of her life as a cat, suddenly becoming aware of her existence. They couldn’t turn her back because that would be the same as killing her. Alex decided it was his responsibility so he took Mabel under his care, teaching her all the necessary things to live in a human society and bring her up to the education she needed for her age. During that time, they fell in love and had offspring that changed Alex’s life. Mabel was everything like a human person, except for the cat's tail, ears, and feline tendencies.

“You always go for the boobs first. I think that counts as a tit scoundrel to me.” Mabel used her other hand to bounce her other tit, causing Alex to blush.

“You caught me red handed, my lady.” Alex stood up and held his hands up. “What could I do to right this great offense to you.” 

“Hhmm.” Mabel brought her hand to her chin while she started a low purr. “I don’t know. Do we perhaps have tuna here?”

“We do have some sardines. Will that please you, my lady?” Alex bowed.

“That will. I will forgive you if you make the tuna casserole.” Mabel winked at Alex.

“It shall be done.” Alex turned around to head to the kitchen to make dinner. Leaving Mabel to continue her bathing in the warm sunlight as she fed our son.

Alex prepared a tuna casserole for dinner. He was helped by his high tech kitchen to make sure everything was right. The family came to the table for the meal, all five of them. The girls were slightly disappointed with it being tuna casserole instead of grilled salmon, they still ate it really fast since it was fish. After dinner and dish, Alex played with the girls in the backyard in the enclosed yard that blocked outside viewers. He then went to the gym in the garage to work out, maintaining the stronger body he had built up since the time he was a weak 13 year old. He needed to be fit for Mabel and the girls if he was going to be able to keep up with them. Alex went inside the house after visiting the lab for something to give investors, there he read stories to the girls before putting them to bed. Mabel focused on the youngest one and getting him to bed.

“That one just does not know when to stop.” Mabel complained as she crawled along the bed towards Alex. “What does he think I am, a cow!?”

“You aren’t giving the impression that you are not.” Alex said as he eyed Mabel’s huge rack that bounced under her nightgown. She was wearing simple white cotton pajamas that hugged her tits and ass very tightly. It would make a lot of guys nosebleed just looking at how much they strain to keep her end.

“I guess a tit scoundrel like yourself would think like that.” Mabel crossed her arms and gave a “humpth.” as she turned the other way.

“I’m sorry.” Alex put his hands together and bowed in front of Mabel. He was in an apologetic position to please her. “Please forget that I said that. You are not a cow. You are a catgirl.”

“I don’t know if that will work, tit fiend.” Mabel had closed her eyes but opened one to peek at Alex. She was trying to sound super angry but it could definitely be heard that she was egging him on to praise her. “You have to do more than that to dig yourself out of the litter box.”

“I’m truly sorry.” Alex caught on to her trying to pull him along. “You are a beautiful and sexy catgirl, the ravenous huntress.”

“That is better. But you still need a little bit more for me to forgive you.” Mabel turned to him and leaned forward above his kneeling posture on the bed. There was a low purring sound rising from her.

“You are a beautiful, attractive, and sexy catgirl, ravenous huntress. A lioness without equal on the safari, your hunt is alway fruitful. You are the cat on the street, ruling from above all the alley cat as the supreme queen, none can compete against you. You are the tigress of the jungle, there is nothing that is above you in the wild. You are the pantheress, quiet and deadly hunter of the night, nothing is safe against you.” Alex praised Mabel.

“This right.” Mabel lifted Alex’s face to stare into hers. He knew that he was forgiven. When he saw her face, he saw that it was red, hot, and horny as she smiled into his gaze.

“I guess that you are in heat tonight?” Alex nervously smiled. Mabel brought a finger to the buttons on her pajamas

“PPPPPPUUUUUUUURRRRRRR”

Snap! Snap! snap!

A loud purr and Mabel pulling her pajamas down the middle was all he got as a response from her. The huge jugs of Mabel flopped out in front of him to see their glorious roundness. Fully ripe and ready for someone to feast on her breasts for nutritious milk. He was memorized by them moving left and right as they settled down.

“I can’t leave a voracious predator like you waiting for her meal.” Alex reached out to grab her breasts.

Alex had a wonderful night with Mabel as they had sex for three hours until Alex couldn’t move anymore. He was left tired and weak as Mabel continued to lick his dick for whatever more cum she could get out of him. She would be doing this throughout the night until he fully recovered tomorrow where he would go a few more rounds before she was done with her heat. Alex was left just staring at the ceiling as he drifted off to sleep.

“I am glad that I had that little accident with the Nanobots.”