Extensive Surgery.

Once Kronus spoke, Kratos, Guilty, Quency, Sin, and Scathach were all led away into separate rooms. Kratos was led to an examination room for a check-up before the actual surgery. As he sat down a female researcher entered the room. 

"Sir Kratos." 

"That's me." 

"Please undress. I will now check your body, vitals, and state to determine if surgery can be done today." 

He stood up and took off his Commander uniform before folding it onto the bed. He of course stayed in his underwear, but the nurse instantly used the device in her hands to scan him from head to toe. 

it quickly gave her a full report on his current status which made her nod. 

"Everything seems to working in order. Please sit." 

He sat down as she reached out for her stethoscope. She placed it on his chest to hear his heart and his breaths. 

"As your lungs and heart are biomechanical we just need to make sure they are stable. From what the scans say, they are working as intended. Maybe a little better than when they went in. Which is odd. The Reactor Core is also stable with no damage or degradation in its energy readings.

We were worried that could happen. Alright, say ahh." 

He opened his mouth as she shined a flashlight to check out his throat. 

"No discoloration and everything seems healthy. 

She checked his ears, his eyes, and even the state of his spine. She ran her hand down his new spinal cord feeling each of the plates there. 

"Do you feel any pain when I do this?" 

"No." 

She reached out and pushed on his right arm to check the state of the biomechanical muscles. Her face began to heat up, but not for the expected reason. She was obsessed with new technology and seeing it working was the greatest reward to her. 

Plus, she was one of the scientists who worked on this technology so seeing it like this gave her the best rush. She grabbed his left arm and had him stretch it out to see how the muscles in his back moved. Several more tests after that including full blood work and they decided that he was in perfect health. Also, he was stable and ready for surgery. 

When she was done with her tests she stepped back. 

"Everything is in order and we can now begin. Follow me." 

He stood up and followed her to the operation room. He wondered how the girls were being treated and hoped no one pissed off Guilty. Before long he reached the operation room. A giant white room with several tools hanging from the ceiling and even more on tables. 

A full team of scientists, engineers, doctors, and researchers were already waiting. Above, Kronus and Hera were watching through a glass viewing deck. Hera placed her hand on the glass as he nodded at her. 

"Please lay down." 

He did as instructed before he took a deep breath and steeled his nerves. They placed several wires on his body to check his vitals during surgery. Once all were in place he gave a firm nod of his head. 

"I am ready." 

A doctor walked over and reached out for the breathing mask.

"I will now administer the anesthesia. Of course, since you are a Cromwell and the genetic engineering we administered to you last time we were forced to create a stronger drug to counteract that. Are you prepared?" 

He nodded. 

"Proceed Doctor." 

The breathing mask was placed on his mouth and nose as the gas was administered. He took deep steady breaths of the drug which was processed by his lungs, but it was designed for this. 

With every passing moment, the drowsiness he was feeling got stronger and more pronounced. His eyes began to close as consciousness began to leave him. 

"Administer the second sedative." 

Another assistant pulled out a syringe and injected it into one of the biomechanical veins of his right arm. This had a reaction with the drug he was breathing in which quickly put him out of it and he fell unconscious. 

To be safe, the doctor in charge of the procedure ordered a third injection. 

"Give him a third one. Working on Cromwells is dangerous as their bodies can work through most drugs quickly. We don't want him waking up mid-surgery." 

The third one was injected into his left arm and he was given a few minutes to make sure he was out of it. They checked his brain waves and determined he was out. Just to be safe, they gave him a full check as they did not want to operate on him still conscious. 

Once without a shadow of a doubt he was out, they put a breathing tube down his throat. Now that they were ready to begin the operation the head doctor decided on the first item of enhancement. 

"We start with the right eye. Speculum." 

Once the desired instrument was handed over, Kratos' right eye was forced open. 

"The eye." 

An engineer retrieved the new eye from the sterile transportation device which was placed next to Kratos' head. With a steady hand, the doctor began the process of removing Kratos' eye. This procedure took an hour to do it properly which was why the team was so large. 

Once the eyeball was extracted along with a portion of the optic nerve, it was time for the engineers to do their work. There were several implants that had to go into the eye socket and hook its systems up with the left one. 

Not to mention, Kratos' brain had already received the implants and systems needed for this. Afterward, the new eye was placed back into the socket it linked to the systems in his brain seamlessly. 

They scanned his head, checked the implants in his brain, and found they were all stable. The eye began to move on its own as it settled into his eye socket. 

"Administer the nanomachines." 

A scientist at the same time carefully injected them directly into Kratos's new eye. This serum flowed back into his brain which they had done last time. They checked everything to ensure the nanomachines were doing their job. 

Once everything was working, they gave him a checkover and moved on. 

"Sir Kronus, the procedure is complete. We can now begin on his left arm." 

"Begin." 

Hera hugged herself as she had seen her brother's eye be surgically removed. 

"What will they do with it?" 

Kronus closed his eyes as he watched them store it away. 

"They will be rendered down for DNA and turned into a Serum for him." 

Hera was confused as she herself had not been told the Cromwell story. It was only passed down from Father to Son never the daughters. 

"Why?" 

"The best ingredient to use for him is his own body parts to reduce rejection. For now, I would watch." 

Down on the surgical table, they were not actually going to do surgery on his limbs. There was no need as they had done the surgery the first time he was wounded. His skeleton at that time had been infused with Goddisium, and his circulatory system, his tendons, and his nervous system had already been enhanced. 

The head Doctor called out for the next phase. 

"Commence Goddisium Nanomachine infusion." 

Kratos' Left Arm and his Right leg were both going to receive the same treatment. They injected what seemed to be liquid metal straight into his veins on both his leg and arm. 

Once the Nanomachines were injected into his body, they began their work. They started to fuse into his tissues causing his limbs to slowly begin to glow a metallic shine. But more importantly, his Cromwell Cells began to react to the Nanomachines. 

Instead of fighting them off, they welcomed them and joined the fusion causing the process to speed up. 

"Nanomachines?" 

Kronus nodded. 

"This is what will make the 10th Generation the best ever produced. Unlike the 1st to 8th generation that uses real muscles, or the 9th that uses pure mechanical, the 10th is both. These Goddisium Nanomachines fuse into the tissues to create a new Biomechanical tissue. 

Of course, this is only the case with Kratos. Granting the benefits of true flesh with the resilience of mechanical fibers. However, only someone like your brother can resist such a procedure. Every time we tried to replicate it in humans they died. 

But Nikkes works just fine which is what his squad is undergoing. When this is over, Kratos and his squad will essentially be 10th-generation Nikkes and a Cratos. That's what I am calling the concept of a male Nikke."

Hera turned to him quite horrified. 

"Subjects?" 

"Criminals. Don't worry though, the ones we used were all Murders, Rapists, and Child Abusers." 

"But, how can Kratos resist if the others die?" 

"Because he is a Cromwell and he already went through this before." 

When she looked down, her brother's entire arm and leg appeared fully metallic. The large team waited and after 5 whole minutes, his limbs began to regain their skin-like appearance. Under their very eyes, they returned to appearing entirely human. 

Seeing that, Kronus spoke up and called down to the Team working on his son. 

"How is his condition, Doctor? I want no mishaps." 

The doctor checked Kratos' vitals and found that while they were elevated he was stable. 

"Stable. He has taken to the Nanomachines once more splendidly, We are ready for the next step." 

"Begin." 

The team working on Kratos all had to help as they flipped Kratos onto his stomach. Once he was on his back, an assistant handed the Head Doctor a series of syringes on a plate. 

Hera nudged her Father morbidly curious. 

"What are they doing Dad?" 

Kronus smiled as he watched the Doctor begin to inject the serums across his son's body. 

"Over the years I have been researching Genetic Engineering using my blood as the test subject. I planned to use these serums on myself, but I think your brother has more use for them. They will make him even mightier than he already is." 

"Do you have more?" 

"Afraid not. Almost everything was used when he got injured. Everything we are using now was manufactured during your brother's time unconscious. I will make more for the family so don't worry. We Cromwells look out for our own." 

Hera nodded as she watched the Serums going into her brother's body. One was injected into every one of his limbs, into his spine, and even into his neck. When the injections were done, they flipped Kratos back onto his back and turned to Kronus. 

"Sir, the Procedure is complete. We can only give the Nanomachines and the Serums to do their work." 

"Good work. This is why I pay you all so much. Take my son to a recovery room. He will not be waking up for at least a month. I want an update on Guilty, Sin, Quency, and Scathach. He will kill me if his girlfriends die." 

Hera craned her head to her Father. 

"Excuse me? Girlfriends?" 

Kronus shrugged. 

"From what I have seen, he is making some sort of harem or whatever. You better ask him and those girls when they wake up as I don't want to know." 

"Dad, what are we going to do? My little brother is going to become a horn dog." 

"What do you want me to do about it? You expect me to walk up to him when he wakes up and say "Son, I think we need to talk about you and your Nikke girlfriends. Pick 1?" Is that what you want me to tell him?" 

Hera shook her head. 

"No, But, talk to him. We need to find out what is causing him to change after 25 years of no interest in women." 

Kronus turned around as he wanted to check up on the other operations happening now. 

"I already know why. It's Quency, she is the one who got the idea of a harem into his head. From what I have seen Guilty does not mind it and the other two aren't pushing him away. You do something about it if you hate it so much?" 

"I will. You said they will wake up in a month?" 

"Possibly. Maybe two. Scathach and Kratos will need the time. So, just be patient and maybe talk to Quency as this was her idea." 

Hera followed her Father who was checking up on Quency, Sin, Guilty, and Scathach. He trusted his researchers as they all owed their lives to him. They had not failed him yet and they would not fail this time. 

(They won't fail FYI. No flags. Also, I think I found another potentiol Harem member. E.H. She seems so cool. But If I add her, that means that makes 6 if I pick Nihilister and I did say that is the most I'd add. I have to pick carefully.)