She blinked. Finding Rinara’s face smiling over her. “How are you feeling sweetie?”

She tried to reply, but couldn’t. It took her a moment to realize that she no longer had control. By then her counterpart was already responding, “Fine. My boobs ache a little though.”

“Don’t feel like sleeping forever anymore?”

She shook her head, “No.”

“Good! I’m glad, and how do you feel about big sis?”

“I love her! Wish I could see her again.”

Rinara smiled, “I’m glad. Welcome back E-5. Why don’t you go back to your room and talk with A-98? She was worried about you. We won’t need you for the rest of the day. I’ll see you tomorrow morning for your regular session.”

Her body nodded, “Of course. I’ll see you in the morning!”

With that, she eagerly jumped off the bed and made her way out of the room. Behind her Tarsa spoke up, “So um...”

“She will recover. Next time you try to do something that drastic, ask!” she sighed, “Well at least we learned something because of this blunder.”

“We did?”

“Yep, now if you will excuse me I have a report to make. One that will get someone fired.”

Panic in her tone, Tarsa said, “Please don’t get me fired!”

“It's not you, but don’t consider yourself entirely off the hook. I’m demoting you. Congrats you are now my personal test subject!”

What happened after that she didn’t hear. As she left earshot. Yet part of her mentally noted that down. Even as she was mentally reconstructing recent events. Realizing that for a brief moment she had no memory of her sister. Something she found very scary, extremely scary. She didn’t want to go back to not knowing her sister.

---

Months Later:

She lay there staring at the ceiling. Today was her last day in the facility. She groaned as something popped out of her with a wet plop. A second later Rinara’s smiling face was above her, “That wasn’t so bad was it?”

Her counterpart replied, “No, it was much better coming out than going in.”

“Yeah well we had to force your cervix open to get it in. That part is obviously going to be a bit unpleasant. Speaking of your cervix, it might not close for the next few days. I want you to check it regularly and if it doesn’t close by the end of the month you are to contact us. Understood?’

Her counterpart nodded, “I understand, but aren’t we giving primary control back to Eriku?”

Rinara smiled, “We are, but you will remain able to act.” She reached over and produced a tool. “Now just relax while I release the suppression.”

The next few moments were blurry, but next thing she knew it was her in control. Not E-5.

Rinara gave her a smile, “Okay sweetie how are you feeling?”

She stretched, “Good.”

“Great! Now do you understand the instructions I gave your counterpart?”

She nodded, “I do.”

“Good. I want you to allow her to act and perform her duties while you are back home.”

She nodded. “I will!”

“In that case, you better get going.”

She nodded, and hopped off the table. Making her way out of the room. Where she met A-98. The younger girl no longer looked younger, she seemed older now. Not only that, but her belly was swollen. A-98 gave her a forced smile, “Hey! I wanted to see you before you left. I’m going to miss you.”

She nodded, “I’ll miss you as well but it's only going to be a few months before I see you again.”

She pouted, “But it will only be for a few days!”

“Yeah well I can’t control the plan. How is your sister doing?”

A-98 shrugged ,showing no emotion about her, as she replied, “I got a nice letter from her. She is finding her work enjoyable. She sent me data about a system she visited.”

“Don’t really care for the letter do you?”

She shook her head, “Don’t really care for sis either, but my counterpart loved it. So there is that.”

She chuckled, “I see. Well it was nice seeing you before I left, but I have to get going.”

A-98 smiled, “Yeah don’t want to be late. See you in a few months!”

---

Stepping off the truck, she looked around at the familiar street. It had been over a year since she had last been here. Notably fewer people were out wearing clothes, but other than that it was the same. Rinara had called it her home but frankly, it didn’t feel like it. The only good thing about this place were the occasional visits from big sis.

Sighing, she walked up the steps to the door. All too soon the door opened without her having to knock. Mother stood there and she shrank a little. “Welcome back. Go to your room. I’ll collect you when dinner is ready.”

She sighed. At least mom remembered her, but it was obviously too much to hope that absence would have allowed her to change. Honestly, she wasn’t that surprised. Mom had never been allowed to love her. The two of them had never been allowed to bond and as such, she didn’t really love mom either. As she entered, she recalled that her birthday was in a month. A fact that put into perspective how long she had been gone. They had taken her when she had just turned eight and now she was a month out from her tenth birthday. If Kiru’s special assignment hadn’t come to an end, she would still be at the facility.

Recalling A-98 she figured if they had known she would be with them that long, they would have filled her with a child too. Instead, she had gotten an egg drainer to collect some of her eggs. In fact, the baby A-98 was carrying came from her own ovum. Not that she was supposed to know that. At least the uncertainty of when her sister was coming home was no longer hanging over her.

She was looking forward to seeing her, and as she recalled she would be here in time for her birthday. Glancing at her mother, after the door was closed, “So about my birthday? Are we still going to be doing... that?”

Her mom chuckled, “Do you like me?”

With all seriousness, she replied, “Nope! Not one bit.”

Her Mom smiled, “Then I don’t think we need to. Besides, you are almost ten. No reason to keep going with that ritual.”

She felt a bit of relief at that. “I see.”

With that the two parted ways. As they began what would prove to be an awkward period in her life.

---

Eriku stretched, slipping out of her bed. Glancing around she barely recognized her room. Even after being here for a while. It didn’t help that all of her old stuff was gone and she hadn’t been allowed to personalize the room in any way. Reaching towards her nightstand she plucked a simple teal blue ribbon off the stand.

She smiled looking at it. This was the only thing here that felt like it was truly hers. With practiced ease she tied it around her tail. More than happy that she had been allowed to keep this, when everything else she had ever owned was now gone. She didn’t really care about the other stuff. Although she did wish she had something to play with during the odd hours. 

Not that it mattered right now. Today was going to be a big day. Kiru had arrived last night. Mother had put on clothes which felt weird. She had even been required to dress to greet Kiru. At least she had been allowed to go without undies. That would have been even more weird than the dress.

Unfortunately Kiru wasn’t fully conditioned to ignore nudity yet. So she had to wear a dress. With that in mind, she reached into her closet. There were only a couple of dresses there. All recently provided courtesy of her new caretaker. What happened to the old one, she wasn’t entirely sure. The new one seemed nicer and was even someone she knew. The same lady that picked her up two years ago, was now responsible for her while she was here.

She slipped on the dress. Then she picked up a small object lying on her nightstand. Before slipping it into her pocket. She tried not to think about what it was for, but instructions were instructions. Ready for the day she slipped out of the room.

She found Kiru in the kitchen. Idly chatting with Mom. They were catching up on recent events. Smiling, Eriku charged her sister and jumped into her lap. Rubbing herself against her sister. “Big sis! How are you! I haven’t seen you in forever!”

Kiru smiled, “Hey there! Eri! Have you gotten bigger?”

She nodded happily before pulling down the front of her dress, “I even have boobies now like you!”

Kiru giggled, and pulled her dress up. “I can see that. So how have you been. School going okay?”

She nodded, “Yep! I’m getting straight A’s”

Mom chuckled, “I’ll let you two catch up for a bit, but don’t chat too long. Remember you are supposed to do that yard today?”

She nodded, “yes mom! I remember.”

Kiru gave mom a look, “Isn’t she a little young to be doing the yard?”

Mom smiled, “Eriku is a big girl now. She can handle a few chores.”

With that Mom left, and Kiru sighed. “I’ll help you with the yard. Okay?”

She smiled, “Of course!”

Idly she fingered the object in her pocket. While she changed the subject, “So how was your special assignment?”

Kiru sighed, “exhausting. It was only supposed to be a year, but our return kept getting delayed. I was beginning to wonder if I would ever get home to see you.”

She giggled, “Yeah I was too.” Idly she rubbed her belly as she thought about that. Not that either of them noticed.

Instead, she listened intently as Kiru delved into tales of her adventures. All of which she enjoyed with rapture. As she pressed herself against her beloved sister. Enjoying every moment of this.

Kiru stretched, “I guess it's about time we go do that yard?”

Eriku pulled the object from her pocket and pressed it against Kiru. It hissed, as she spoke, “Sorry sis, but I am afraid you need to take a nap instead.”

Pushing herself off, she turned to see Kiru’s glazed eyes fading into darkness. Glancing at the clock, she had a couple minutes. So she stripped herself off, and then rubbed her naked body against her sister. Enjoying the feeling for a moment or two.

Sighing, she separated, moved to the door and glanced out. Mother was waiting, naked as usual. “Is she asleep?”

Eriku nodded, “Yes, sister is asleep.”

“Good, I’ll tell the caretaker.”

With that Mom left and she spent the time staying close to Kiru. Enjoying her sleeping presence until the couriers arrived to take her away. She did not see her again until the end of the week and the two of them enjoyed a lovely spa trip together.

---

Eriku stretched as they stepped off the shuttle. She smiled when she saw the familiar walls of the facility. It had been months since she had last been here. She was looking forward to seeing A-98 again. Behind her a familiar figure stepped off the shuttle, saying, “happy to be back?”

She nodded, “I am! The other place doesn’t really feel like home. I don’t feel like I am living there.”

“Good. I don’t want you to feel at home there. Which is why I drag you back here at any opportunity. Speaking of opportunity, since your sister is off on assignment, you get to stay for a few months this time and not a few days like last time.”

She smiled happily, “I’m so looking forward to that.”

“I am as well. I can’t wait to see you finished.”

She knew what her caretaker meant. Her natural growth had been frozen for years. The only time she ever grew was when they administered her growth treatments. Now that they were going to have her for a few months, they were going to administer the final rounds of growth treatments. She couldn’t wait to see herself fully grown as well!

Happily she followed her caretaker into the building. Where she was met by Rinara. Who smiled, “Ah! Welcome back. Now if you would follow me, I’ll go ahead and suppress your personality so that E-5 can take over.”

She nodded, “Of course.”

Eriku fell in line and followed her to a familiar room. It had been a while since E-5 was in full control of her body, and she was looking forward to it. She knew it was mostly conditioning that made her feel that way, but she wanted her own personality suppressed.

As they entered the room, she noticed a familiar face laying on the table. Another scientist was taking mental readings. She spoke up, “I’m almost done here.”

Eriku glanced at the girl on the table, “So how is A-98 doing?”

Rinara answered, “We are erasing her original personality today. Her sister’s assignment ended early and we were successfully able to intercept her, and erase A-98 from her memory. That means A-98 doesn’t need to go home anymore.”

Eriku blinked, “oh? She doesn’t? How nice.”

“Yep, she gets to stay here and be a breeder. Also she will be one of my test subjects from this day on as well.”

“I’m sure she will be quite happy about that. Although it might be interesting for her not having her counterpart.”

“Perhaps, but she is programmed to want her counterpart erased so that she can take over permanently. She will be ecstatic to find that it has been done. Trust me.”

Silently E-5 told her, “She will. I’m looking forward to the day that they erase you.”

For a moment she said nothing before finally replying in the same manner, “Strangely so am I.”

E-5 in a happy tone replied, “I’m glad. It means the conditioning is working perfectly.”

Before she could think much longer on her newfound realization that she was looking forward to being erased, Rinara spoke up, “speaking of erasing personalities, I would like you and your counterpart to help me with programming K-20.”

“K-20? Who are they?”

Rinara smiled, “Why, they are going to be your sister’s counterpart. Once we get her conditioned and out of her current military posting we are going to bring her here to be with you.”

“Big sis is going to be here!? When?”

“In a few years most likely.”

She frowned, “I see.”

“On a different note, how do you feel about her personality being erased and replaced?”

“Big sis is big sis. It won’t make a difference.”

Rinara smiled, “I’m glad to hear it!

Over by the bed the scientist was unhooking A-98 who pulled herself up. She smiled, “hey E-5! Here to have your counterpart suppressed again?”

“Yeah I am here to be suppressed again. I hear you got your counterpart erased.”

Excited, she nodded, “yep! She is all gone!” she paused to run her hands down her body, “And this is now all mine!”

“You seem happy,” commented Eriku.

A-98 nodded, “Of course! My counterpart was erased. I’ve been looking forward to it for so long. Now I don’t have to listen to her feelings about how she is missing her silly sister. I never liked that sister of ours anyways. I’m quite glad that we don’t have to go ‘home’. I get to stay here and be experimented on. And used to breed babies. So much better. Don’t you think?”

“Yeah it's a lot more fun here than it is back home.” she paused, “Well except when sis visits. That is always fun. Most of the time anyway. I hate it when they ask me to betray her trust. At least she never remembers it, but I do.”

A-98 giggled, “Sounds fun actually. I’d love to do just that.”

“A-98 sweetie? Could you wait outside for a minute? I would like to get started on an experiment with you, as soon as I am done here.”

A-98 smiled, “sure!” she turned to Eriku, “I guess we can finish catching up later. At least then I will be talking to the proper you, and not your counterpart.”

She smiled, “I look forward to it!”

---

The suppression took only moments and her body followed Rinara out of the room. It felt quite right for E-5 to be in control instead of her. A-98 greeted them outside the room and the three of them went together to Rinara’s lab. She had nowhere else she needed to be and Rinara did need to get started on her growth treatments, but first was the experiment with A-98.

The lab wasn’t far so they were there in moments. As they stepped in, Rinara was talking about the experiment, “I’ve been wanting to do this since your boobs stopped growing. Such large sensitive breasts are perfect for this experiment. Of course I only need the one, but you might look weird with just one. So I’ll cut the other one off, when we are done. There is another experiment I’d like to do, but it's best done on a severed breast.”

A-98 tilted her head, “one breast?” she frowned, “Does that mean the experiment is likely to destroy one of my boobs?”

“Destroying your boob is pretty much a requirement for the experiment,” said Rinara as she pulled out a contraption. A clear boob shaped cylinder with a weird bladed interior. “I’m going to turn this on, and you are going to stick one of your boobs in here.”

A-98 winced, as she looked at the contraption. “Um? You sure about this?”

“You aren’t going to need it and your boobs are too large anyway. Besides, I have a few ideas for replacing them later. Now why don’t we get started?”

Thankfully her body turned away before the experiment began. Moments later she heard A-98 screaming as her boob was cruelly shredded by one of Rinara’s devices. She had known that Rinara could be cruel and often hurt her test subjects, but until this moment she had never seen it. This entire scene clashed with the kind caring image she had of the scientist.

When the screams stopped E-5 turned around, and they saw A-98 with a single destroyed boob. It was bleeding and shredded. The girl was using a laser scalpel on her own breast to remove the remains. While Rinara jotted down her answers for how it felt. What exactly Rinara was doing this for, she had no idea.

After a moment she helped A-98 out before proceeding to slice her other boob off. Without an anesthetic naturally. A-98 winced as the blade went through her boob, but didn’t scream. It was deposited in a special jelly and a topical treatment was applied to the girl’s chest.”

“Okay, I will see you later. You can go now. Thanks!”

A-98 gave a wry smile, “Glad my boobs were useful to you, Mistress. See you later.”

With that she departed from the room. As Rinara turned to her. “Alright E-5 lets get your growth treatment done. Then you can go catch up with your friend A-98.”

Her treatment was fairly straightforward. So it wasn’t long before she could chase after her friend and her body did just that the moment she was dismissed. The following few months proved to be a lot of fun. Not so much for poor A-98 but she too had some fun when she wasn’t being experimented on. Before she knew it however she was once more heading ‘home.’ Something she still looked forward to. The both of them did, since they got to see big sis.