Cat Girl Nuku Nuku Fan Fiction ❯ Catgirl in Heat ❯ Catgirl in heat ( Chapter 1 )

[ X - Adult: No readers under 18. Contains Graphic Adult Themes/Extreme violence. ]

Catgirl in heat

By Persona Ohnlyne

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Warning: This is a lemon. That means that if you are underage, you can't read this. You have been warned, so don't blame me if you get caught.

Disclaimer: I don't own the characters of Banou Bunka Nekomusume (Or cat girl Nuku Nuku) I'm just borrowing them, so don't sue me.

Okay, now on with the fic.

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Dr. Natsume was packing up in his small room of his small apartment.

He had to present a new invention of his in a press conference that was going to be held in northern Japan. It wasn't going to take long, two or three days tops.

Still, he was a little reluctant to leave.

His oldest 'daughter', who was really an android with the brain of a cat, was going into 'that part of the season'.

When he had built Nuku Nuku, using the brain of a cat, he had made some programming to make her as much human as possible.

But not even the most advanced technology could overwrite animal instincts made by centuries of evolution. So, even if Nuku Nuku could talk, or reason different problems … even ride a bike … she still liked to chase mice, or take naps on the roof, and all other things that cats did.

That included, of course, Nuku Nuku's mating instincts. Like any other female cat, Nuku Nuku went into heat every three or four months.

Dr. Natsume couldn't just disconnect Nuku Nuku. That would cut the life support system that her android body gave to her cat brain, and that would, of course, kill Nuku Nuku's brain.

So, the only thing he could do when Nuku Nuku was in heat, was send his son, Ryunosuke, to his mother's house for a week, and lock Nuku Nuku in Ryunosuke's empty room for the week.

Nuku Nuku always understood why her 'father', or Papa-san as she liked to call him, did that to her. It was for her own good.

But sometimes it was just too much for them, and Dr. Kyusaku Natsume had no other choice but to go someplace else while Nuku Nuku was yowling, almost crying, and begging him to let her out.

Good thing that he could decrease Nuku Nuku's super strength during those times, or else she could have easily break down the door.

He had already locked Nuku Nuku in Ryunosuke's room, and had turned off her super strength.

The problem was that Ryunosuke's mother, Akiko, couldn't take her son this week because she had to go to the United States for a new business contract for Mishima Heavy Industries, she was the COI of the company after all.

Dr. Natsume had no choice but to let Ryunosuke alone to take care of the house. He had turned 18 recently so he was sure that he was going to be responsible enough.

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Ryunosuke parked his bike in front of the apartment complex were he lived with his dad. He had his keys ready since his dad had told him that he wasn't going to be home for a few days, something about a press conference for one of his new inventions.

He also remembered something about Nuku Nuku being locked up in his room, and that he couldn't let her come out no matter what she said to him.

Ryunosuke walked upstairs to his house, and using the key, he opened the door.

In Ryunosuke's room.

Nuku Nuku had gone into heat a few hours ago.

It was torture for her to be like this, she was locked in Ryunosuke's room. Papa-san had deactivated her strength, so she couldn't just break down a wall to escape. But it was even worst to be in a 'human' body. Papa-san always told her that he had made her android body to be as human like as possible. That meant that she could eat and drink, and she would blush when she was embarrassed, and all her other bodily functions worked as if they were human like. It was driving her crazy! She felt like she was melting from how hot she felt, she didn't have to look in a mirror to know that she was flushed all over. And she knew that she had to go for days like this until she was no longer in heat. She had already taken off her clothes since they were bothering her.

Suddenly, her sensors, that looked very much like cat ears, popped from the sides of her head as she heard the door open, she raised her head and smelled the air … it was Ryunosuke.

Oh, no! Why!? Why him!? Papa-san had told her that he was going to be out of town for a few days, but he never said anything about Ryunosuke being here!

Ryunosuke was so kind to her all the time, always worried about what happened to her. Always defending her when people called her dumb, not knowing that she was pretty smart considering her brain was from a cat.

She wanted him. Even tough they were raised as brother and sister. She knew that that wasn't true, she wasn't even human … but it would be wrong … she knew that it was her cat instincts that were trying to take over.

She had to stop to think of Ryunosuke as her mate … but she wanted him so badly.

Not able to stand it any longer, she sat down on the floor, with her back on the door. It was so hard to contain herself, until she couldn't anymore, and a moan, almost a cry, came out of her mouth.

Ryunosuke heard that, and was kind of worried. His dad just told him to never let out Nuku Nuku no matter what. But he never explained him why. Just that she tended to 'malfunction' this time of the year.

As he closed the main door, he walked towards the door of his room.

"Nuku Nuku? Are you okay?"

Nuku Nuku wanted to cry when she heard Ryunosuke's voice so close. Only a wooden door separating her from him. He was so close but so far at the same time.

She wanted him to go away, or else she might do something terrible. But it was something stronger that her. She couldn't fight it, she wanted him so badly that it hurt.

Nuku Nuku half turned to look at the door, and placed a hand over it. Trying to feel the door as if it were Ryunosuke himself.

"Ryunosuke … Ooooh … Ryunosuke …" Nuku Nuku moaned.

Ryunosuke was startled when he heard Nuku Nuku's moans from the door. She sounded like she was crying and … aroused?

"Nuku Nuku!? What's wrong?"

"I need you Ryunosuke … I want you so badly … please open the door … please …"

Ryunosuke heard what Nuku Nuku said … what was going on? His father told him that she would 'malfunction' but she sounded like she was suffering … like she was in pain. And she also said that she wanted him?

Ryunosuke face faulted when he put two and two together. Nuku Nuku being a cat … her moaning … she must be in heat!

"Nuku Nuku … are you in heat?" He asked, he wanted to make sure.

Nuku Nuku heard what he asked, and nodded, then realized he couldn't see her trough the door, and answered.

"Yes … Papa-san didn't tell you? … Oooh … it doesn't matter … Ryunosuke … open the door … I need you … I'm begging you …"

It pained Ryunosuke to no end to hear her like that.

"Nuku Nuku … I can't … I'm sorry …"

"No! Please … I'll do anything … just open the door … It hurts so much … I can't stand it …"

"Nuku Nuku …"

"PLEASE! Please open the door!" Nuku Nuku felt tears coming out of her eyes.

"… I … I can't, please understand."

"Ryunosuke … please … I … I love you …"

Both were surprised when they heard that. Nuku Nuku was surprised to hear herself saying that, and even more surprised when she realized that she had meant it. She loved Ryunosuke, not as her brother, but as her mate.

Why … why didn't he open the door … couldn't he see how much she wanted him? Didn't he love her too? In the back of her head, she knew that he was only doing this because he cared about her. But right now all she wanted was for him to open that door and take her.

Ryunosuke hadn't even moved since he heard Nuku Nuku. Did she said what he tough she had said?

"What … what did you say Nuku Nuku?"

"I love you Ryunosuke." She answered hearing his question. "Please open the door … don't you love me? … Please … I need you." She begged.

Ryunosuke wanted to open the door, he really did. Not only because he knew how much pain Nuku Nuku must be feeling, but because he loved her too. Even tough they were raised as siblings, both of them knew that it wasn't really true. Nuku Nuku wasn't his sister, Nuku Nuku wasn't even human. Deep inside he knew that he had always loved her. But still … he couldn't let her out. He had promised his father not to.

Nuku Nuku was crying even more now. She didn't know what pained her the most. The constant demand her brain was sending to all her body, or that Ryunosuke wasn't going to open the door and take her even tough she wanted him desperately to do so.

She was desperate, she felt like if Ryunosuke didn't open the door, she was going to die. "Ryunosuke …" She said to him, her voice was just a whisper.

"Yes?" Came Ryunosuke's worried voice from the other side of the door.

"Why won't you open the door? Don't you want me? I want you."

"It's not that Nuku Nuku. I … love you too. I don't want you to suffer … but … I just can't."

Nuku Nuku smiled when she heard Ryunosuke say that he loved her too. "Why can't you? Is it because we are brothers?"

"Well … yes … part of it."

"But Ryunosuke, I'm not your sister … I'm not even human … I wont even get pregnant because I'm an android."

Ryunosuke bit his lip when he heard that. He wanted to get out of the house so he didn't have to hear Nuku Nuku's desperate begs and moans, but he couldn't leave her in this condition. She was tempting him so much … if this kept up, he might cave in.

"Please Ryunosuke … if you don't open the door … I'll jump out the window."

Ryunosuke heard what Nuku Nuku said, and he didn't even stop to think what he was doing, he knew that Nuku Nuku didn't like to lie, and that she might jump. Turning the lock, he opened the door.

Nuku Nuku heard him open the door, and smiled, she moved away from the door, on her knees, and turned to see him.

Ryunosuke entered the room and saw Nuku Nuku, on her knees, she was completely naked, her skin looked like it was on fire, her nipples were stiff, and her pussy was soaking wet, dripping her girl juice on the floor. Her face was a mix of lust and pain.

Nuku Nuku pounced towards Ryunosuke, knocking him onto his back on the floor.

Ryunosuke tried to get up, but she pinned him down by draping her body on him. He could feel her hard nipples pressing into his chest

through his shirt. He could feel her cunt, as she rubbed it on his crotch, soaking his pants. He could feel her high body temperature.

Not wasting any second, her instincts taking the better of her, Nuku Nuku unzipped Ryunosuke's shorts, moved them down to his knees along with his boxers, and took his cock in her hand.

He was already semi-hard, so it took her little effort to stroke him to full hardness. When she felt that he was ready, she impaled herself on him.

She let out a moan of relief as she moved up and down, at a fast pace, wanting to make him cum.

She was moving so fast, that it only took a minute to make Ryunosuke orgasm. She felt his cock pulse inside her, and then she felt his cum inside her cunt. She threw her head back as she too had an orgasm.

When she was done, Nuku Nuku rolled off him, to catch her breath.

Ryunosuke didn't know what happened, it took less than a minute. He felt Nuku Nuku take off his pants and boxers, then he felt her stroke his cock, and then she fucked him incredibly fast. So fast that his mind was fogged with pleasure, until he reached his peak, then it was over.

He turned his head to see Nuku Nuku next to him. She was crying.

When it was over, Nuku Nuku half-came to her senses.

Nuku Nuku couldn't believe what she had done. She wasn't able to control herself … her cat instincts had taken over her, and she had just … just raped … Ryunosuke.

Papa-san was right, she was dangerous when she was in heat! Why couldn't she control herself!? Now she had hurt the only person she had ever loved. Ryunosuke must hate her now!

That's why she was crying.

"Nuku Nuku? Are you okay? Why are you crying?"

Nuku Nuku closed her eyes tightly when she heard Ryunosuke next to her. Even after what she had done … he still cared for her.

"I'm sorry Ryunosuke." She said in a barely audible whisper. "I'm sorry that I raped you … when Papa-san comes back, I'll ask him to disconnect me forever."

"Nuku Nuku … please don't cry. And don't say that. I don't want you to be disconnected …"

Nuku Nuku felt Ryunosuke's hand on her shoulder as he turned her over so she was lying on her back. She opened her eyes. He was kneeled next to her, looking at her with understanding in his eyes.

Gently, Ryunosuke wiped a tear from Nuku Nuku's cheek.

"I love you … not as my sister … but as a lover. I think I always did, I just didn't realized until now. Please Nuku Nuku, don't blame yourself, I understand what you were going trough, and I won't hold it against you."

Nuku Nuku felt a mix of emotions, relief for being forgiven, joy at being loved by Ryunosuke, and finally arousal … it seemed that even tough she had relieved some of it, she was still in heat.

"Ryunosuke …" Nuku Nuku whispered, "let me make it up to you … let me make love to you."

Ryunosuke was a little surprised at this, but then he smiled, he knew that Nuku Nuku was thinking as a cat, considering that her cat-ear sensors where still at the sides of her head. And considering her body temperature that he could feel with his hand, she was still in heat.

He wasn't sure of this, but it would show Nuku Nuku that he forgave her, and it will help her get some relief from her 'in heat' state.

Smiling at her, Ryunosuke nodded.

"Just relax and let me give you some relief."

Before Nuku Nuku could answer, Ryunosuke lowered his head to Nuku Nuku's breasts, and started sucking on one, while caressing the other with his hand.

Nuku Nuku moaned loudly at Ryunosuke's caresses, her state making her skin and erogenous zones extra sensitive. She had to bit on her knuckle to keep her moans at a low level.

"Ryunosuke … Ooooh! … thank you … hmm … oooh!"

Ryunosuke moved his head from one breast to the other, repeating the same treatment.

It was sweet torture for Nuku Nuku, she was more than ready for him. Finally she managed to say so in between moans.

"Ryu … Oooh … Ryunosuke … please … ah, ah, ah … take me I'm … hmmm! … I'm ready."

Hearing that, Ryunosuke left Nuku Nuku's breasts alone, making the cat-girl whimper, longing from the touch. But it didn't last long, since he moved so he was kneeling in between her legs. He was only wearing his shirt since Nuku Nuku had already taken off his pants.

Nuku Nuku saw what was about to happen, and moved before he could do anything.

Ryunosuke tough that she had changed her mind, but then realized that she had just switched positions so she was standing on all fours, presenting her dripping cunt to her mate.

(I have to remember that she is a cat) said Ryunosuke to himself.

Slowly but surely, Ryunosuke entered Nuku Nuku from behind, making her moan with every inch, and an occasional purr left Nuku Nuku's lips every now and then.

Moving slowly at first, then faster, Nuku Nuku moving her hips to meet his. Both lovers moaned and grunted as the two of them felt orgasm coming closer and closer, but trying to hold back, wanting to make this moment last for as long as possible.

Finally, they couldn't hold their release anymore, and both of them climaxed almost simultaneously. Both screamed each other's names, throwing their heads back, and then collapsing on the floor.

Ryunosuke could hear Nuku Nuku purring at his side, she cuddled up next to him, resting her head on his chest, while Ryunosuke caressed her hair.

"Ryunosuke …"

"Yes Nuku Nuku?"

"What are we going to tell Papa-san when he comes back?"

Ryunosuke didn't know, but he really didn't care at the time. Still, what Nuku Nuku asked was important. Thinking for a minute, he finally answered.

"I guess we wont tell him. Not immediately at least. We'll wait till the time is right … same for mom."

He felt her nod. They just laid on the floor for a few more minutes. Then Ryunosuke broke the silence again.

"I love you Nuku Nuku."

"I love you Ryu-kun." She answered, smiling.

Both of them fell asleep, feeling secure in each other's embrace, not having any other care in the world.

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The End