*I don't own Infinite Stratos*

For those that knew her, Chifuyu Orimura was a shrewd and proper woman. Many that had made her acquaintance had only ever seen her face in that serious glare that conveyed only a strict business mentality. So it would come as a suprise to many the state that she was in now. Panting heavily, the busty woman let out muffled moan every few seconds. Pushing her panties to the side hastily, she let out a whimper as she inserted her index finger into her quickly moistening pussy. Yes, Chifuyu Orimura was masturbating. Those previously mentioned people would probably be scandalized as it is, but that was nothing to say of the piece of clothing pressed tightly to Chifuyu's face. A pair of underwear was held tightly to her nose as she took deep breaths, savoring the scent. Now you may ask: "who does that pair of underwear belong to?", and I'll tell you. The underwear that Chifuyu was using to masturbate with belongs to her younger brother, Ichika Orimura. Chifuyu has deep feelings for her brother, feelings that she initially didn't know she had, but now realized she did. She tried to forget them, but they proved to be to much. The scene we are witnessing now is the culmination of repressed feelings finally letting themselves out.

*With Chifuyu*

Chifuyu let out a muffled moan as she vigorously rubbed and fingered her soaking quim. Her mind was only focused on the singular objective of reaching her orgasm, and was currently focused on supplying her with fantasies starring the object of her affections. The usual protests her mind fired at her when she thought of him as such were unusually silent as she reached closer and closer to the finish line. As she neared the finish, she began to softly chant his name.

"Ichika, Ichika, Ichika, Ichika!"

Her soft chants filled the room as she continued to rub her soaking pussy. Agonizingly close, Chifuyu increased her pace and began to use her other hand to fondle her breasts. Using her middle finger to finger herself, with the added stimulation of her palm rubbing her clitoris. Breathing heavily, and still chanting, Chifuyu stopped trying to hold her voice in. Her chant growing louder and louder, Chifuyu finally reached her limit when she tweaked her nipple. "ICHIKKKKAAAAAAA!", she screamed as her pussy convulsed around her fingers. As her orgasm died down, Chifuyu closed her eyes and rested her arm across her forehead as she panted heavily. As she waited for her breathing to regulate, Chifuyu finally allowed the guilt to hit her. She knew it was wrong of her to feel this way for her brother, but she just couldn't stop from loving him. How could she when he was so kind and loving towards her? The first time she had noticed that something had changed between them had been when he had injured himself a while back. While she had acted stern and uncaring as she scolded him, he had merely given her his trademarked smile and had said, "I'm sorry for worrying you Chifuyu-nee, but it makes me happy that you care."

She still remembered the way her cheeks had heated up as she had struggled to come up with a response. Eventually she had settled on conking him over the head with her rule book(although lightly) and had told him not to say such ridiculous things, but her bright red cheeks must have betrayed her as he had just given her a knowing smile. As time went on, she found her self reacting similarly when he acted overly affectionate with her. She remembered that while before she had tried to prevent him from saying such things, she had eventually come to look foward to when Ichika would express his affection for her. His praises would fill her with pride, and his compliments would leave her feeling embarrassed but pleased. And then there was the times would she would realize how much he was on her mind. Whenever she would walk through town she found herself thinking things like "That man looks like Ichika", or "This sweater would look good on Ichika". Thinking of him would always fill her with a sense of contentment and warmth. She would find herself absent-mindedly comparing other men to him, with the contenders often losing. Things like this had her questioning just how she felt about him. His heartfelt compliments filled her with warmth, and any amount of time spent with him made her feel almost deliriously happy. After weeks of feeling this way, she had finally come to the conclusion that she had feelings for her younger brother. Upon this realization, she had initially been filled with joy, but then the reality had been set upon her. "Siblings can't be together, it's wrong!" her mind had argued, and she had accepted it. She had immediately given up on any chance of her and Ichika ever being together, and as a result, had fallen into a depression. Unfortunately(or fortunately, depending on who you ask), this had attracted the attention of the very man who had caused the storm of emotions that afflicted her.

She smiled warmly as she thought about Ichika trying to cheer her up. For a time she had reverted back to how she usually acted around him. She would regard him with a cold glare that conveyed no emotion, and would scold him harshly when he would screw up. While at night she would lay in bed feeling sorry for herself and had cried herself to sleep numerous times. She couldn't believe how much the thought of not being with Ichika caused her heart to ache. Even if she had decided to close her self off from him, he had almost redoubled his efforts to make her happy. Despite her cold attitude, she couldn't stop her face from heating up when he favored her with a smile, or still the fluttering of her heart when he would shower her in compliments and praise with that adoring look on his face. It all eventually became to much. Which led her to her current situation. Blushing as she stared at her hand that was coated in her essence, Chifuyu decided that she had better clean up before she went to bed. Glad that Ichika was staying at a friends house, Chifuyu entered the bathroom wearing nothing but one of Ichika's shirts and a pair of panties. She blushed then frowned when she realized that she would need to get rid of them as they were still soaked with her arousal. Pulling them and her shirt off, Chifuyu hopped in the shower. Letting out a small yelp when the water proved to be much less warmer than desirable, she eventually let out a contented groan as the water quickly heated up to a comfortable level. As she ran soap over her body, she wondered to herself if Ichika would find her body desirable. She decided that he would, if the way he had stared at her in her swimsuit had been any indication. Running her hands through her hair, Chifuyu closed her eyes and began to let her mind wander to less than innocent territory.

*Chifuyu's Fantasy*

"Ichika!", Chifuyu moaned as her pressed into her from behind, pinning her between himself and the wall. He began to run his hands up her sides, causing her to writhe in his hold.

"Wha-What are you doing?", she questioned in a harsh tone, but inwardly she was trying not to think about how good Ichika's hands were making her feel.

"I want you Chifuyu-nee.", he breathed hotly into her ear, sending shivers down her spine. At the same time his hands completed their journey and we're now cupping her breasts over her clothes. She let out a soft moan when he began to rub and fondle them. Despite the pleasure she felt, she tried to fight back and convince him to stop.

"But we're brother and sister", she pleaded "This is wrong."

"You're not being honest Chifuyu-nee" he had responded, and she nearly let out a shriek when she felt his other hand cup her moistening pussy. She began to reprimand him, but it was cut off by a guttural moan as he began to rub her pussy through the damp material of her panties.

"This place is being much more honest Chifuyu-nee." He said, never stopping in his rubbing.

Chifuyu could only squirm and moan in his grasp, eyes closed as she let her self get lost in the pleasure. Chifuyu let out a gasp in her fantasy as well as the real world as simultaneously Ichika and herself inserted a finger into her now soaking vagina.

"I-Ichika", she moaned. "St-stop th-that, your d-driving me crazy"

Ichika only grinned.

"But Chifuyu-nee, I stopped moving a long time ago, it's you whose moving."

Opening her eyes in shock she looked down at the junction of her legs and realized that Ichika was telling the truth. She was rocking her hips into his hand trying to get as much contact with him as she could. Looking over her shoulder, she sent Ichika a look that she was sure was filled with a burning lust. Refusing to be idle anymore, Chifuyu leaned backwards into her brothers chest and continued to rock herself against his hand. Reaching down with her own hand, she placed it over his and applied more pressure. Moaning at the stimulation, she used her other hand to wrap around Ichika's head as she leaned up to kiss him. She moaned as her breath was stolen by the kiss. Ichika decided that he wasn't going to be idle any longer either and he began to increase the pace of his rubbing. As she moaned into his mouth, Chifuyu's eyes shot open when Ichika took the opportunity to invade her mouth with his tongue. However her eyes soon became hooded and glazed over as his tongue began to wrestle with hers. Unfortunately, the need to breathe soon became unbearable and they broke apart with a gasp. Feeling the strength in her legs leaving her, Chifuyu slumped over in Ichika's arms panting and moaning heavily.

"Ichika please", she pleaded "I'm so close."

Grasping under her chin and turning her head so they could see eachother, Ichika kissed her greedily before pulling back.

"Tell me what you want Chifuyu-nee."

Chifuyu blushed and looked away demurely.

"Ichika, please don't make me."

"But I want to hear your beautiful voice." He responded and began to rub her snatch even harder than before. Moaning and groaning in response Chifuyu dropped her protests and began to give him what he wanted.

"I'm gonna cum, I'm gonna cum, I'm gonna cum! Ichika please make me cum!" She screamed loudly.

"Well said nee-chan, it would be cruel of me to deny your request." With a pleased grin, Ichika once again claimed her lips before he began focusing on her clit. Chifuyu's eyes shot wide open as he pinched her clit between his finger and his thumb as he tweaked it. She let out a scream that was quickly muffled by Ichika's lips as she reached her climax. At the same time in the real world, Chifuyu silenced her scream by biting her knuckle. Panting heavily, Chifuyu shivered as she realized that at some point during her fantasy the water of her shower had turned cold. Quickly getting out, Chifuyu dried her self off and slipped on a fresh pair of panties. Deciding to forego a top, she quickly hopped in bed. Still coursing with pleasure from her quick shower tryst, she had only on thought before she finally dozed off:Ichika will be mine.

Hello, heavenshockinghollowflash here. This is my first fan fic. I've always been a fan of IchikaXChifuyu but there aren't many fics with them in it. What better way to fix that than to write my own right? Sorry I don't have much to say, but I hope you enjoy my first fic. Don't be too harsh. Constructive criticism is encouraged. Thanks.