Our Private World

Chapter Zero: The Butterfly Effect

Written by: Loki

Pairing: Minato/Minako (MC/FeMC), Hint of MC/Everyone, Hint of FeMC/Everyone

Disclaimer: The Persona franchise belongs to Shin Megami Tensei and to all respected owners. This is purely a work of fiction and is no way to be taken seriously. Minato and Minako Arisato cannot coexist in the canon timeline, so I am purely making a few of my own headcannons clear.

Enjoy.

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It wasn't a secret in Iwatodai. Minako was possessive of her older brother. Very possessive.

But what happened in the Dorms... was another story. But because of the eerie telepathic silence the twins shared since their seventh birthday, you never would have guessed that their relationship far surpassed being brother and sister. Minako surely took advantage of being a girl and make it clear that nobody was going to hurt her brother but her. As they belonged merely in the twins' private world of two, Minato simply nodded, patting his sister's head and brushed it aside in public. However, he knew that statement was completely true. It was really hard to notice what happened occasionally in eachother's rooms, late at night when the others were studying or asleep.

Afterall, Minato and Minako brought dates home to the dorms before. And assuming the gasps and moans were from any of those other people, nobody would even suspect that at night the mere thought of having one of those dates as a sexual partner was thought of as unacceptable by the twins.

It was close to one in the morning, and everyone had gone to bed after a long day in Tartarus. But Minako still had some energy and tip-toed her way down into the boy's dorm, wearing nothing but a pink camisole and a pair of cutesy flower-print panties.

Knock. Knock.

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Minato sat up in bed, wondering who it was since Pharos certainly didn't bother knocking... He looked at his clock and realized he was late. Ah. It's that time, isn't it? he thought silently as he got up and answered the door, seeing his little sister with her casual clothes in her arms.

It was pretty normal for her to come and visit him at night. Usually she came when she was lonely or when she had a date over in the daytime. It was most likely a psychological thing where she felt guilty for something. Afterall, they had promised they would stay together forever since the accident on the Moonlit Bridge in 1999.

"Onii-sama.." she mumbled, a little blush staining her cheeks as Minato opened the door to allow her in. Minako closed the door behind her and hung her clothes up on the doorhandle before wrapping her arms around Minato's neck, standing on her toes to kiss him. "I missed you Onii-sama.." she added in a whisper.

A slight shiver went through Minato's spine as he nodded and picked her up. "I missed you too.." he said as he set his sister down on the blue sheets of his bed and kissed along her neck and collarbone. Contrary to popular belief, Minato Arisato was not a lazy person when it came to his love life. Especially when his sister was so needy for his presence. "You don't have to call me that anymore while we're alone.."

They had kept this little secret for a few years now. If either of their adoptive parents found out, well, all hell would surely break loose.

Which was why Minato and Minako swore that they wouldn't get too friendly too with eachother in the daytime, and only rendezvous at eachother's bedroom at night. Where they actually had sex was a different story. Another part of the agreement was that they could bring home dates to help cover up any evidence that they actually were up to their ears in a taboo relationship only if they didn't become too attached to the people they were dating on the side. It was exciting as hell, but they knew that someday they would be found out regardless of how careful they were.

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The whole dorm slept silently as small gasps escaped Minako's lips. It was the time of month she looked forward to, since everybody else was usually too tired to wake up regardless of whatever sound that managed to escape into the halls.

Minako leaned over her and nipped her shoulderblade. Tonight, it was going to be all about her. After nearly a whole month of ignoring his little sister, he wanted to make up for it by paying full attention to her. It was the very least he could do for her as she reached her arms up and began to unbutton his blue pajama shirt.

A quiet moan escaped Minako's lips as her brother stopped kissing her and took one of her nipples into his mouth, slightly biting hard enough to get a reaction.

"Shhh.." Minato said as he stopped to look at her, silencing her with a kiss. "We can't be caught."

"Mm.." she nodded as she ran her fingertips along his cheek. "I want you."

Minato chuckled silently under his breath and gave her a look that simply said, 'You already have me. What else do you need?' as he slid a hand into her camisole and flicked his thumb over her hardened nipple, causing Minako to gasp loudly. "Shh!" he hushed as she bit her lip.

Footsteps. Damn!

"Get under the blanket!" he whispered as she did as told while Minato turned onto his side. She pressed into his back while the footsteps got closer to the door. Minato pulled the blanket to his neck and Junpei opened the door.

"Yo, dude... can ya keep it down? You're startin' to sound like Minako-tan.." he yawned, as he noticed only the blue-haired male in bed, he shrugged and went back to his room.

Minato sighed and got up on his feet. "We're going to the bathroom." he said as he waited a few minutes to pass for Junpei to sleep, and Minako followed her brother to the men's bathroom on the main floor.

She pressed her back to the cold tile on the shower wall and beckoned him to come closer. Locking the door, Minato nodded and stepped into the shower, sliding her shirt off and tossing it aside. Minako smiled as she tossed his shirt aside and hooked her thumbs in his pajama pants while he had his thumbs in the elastic of her panties.

It was exciting, since she loved comparing his body to hers, since they were once a complete organism at one point, and yet they still got off to simply comparing what was different about the other. The proper term might be 'I'll you mine if you show me yours', but it didn't apply much to the twins who already knew everything about eachother inside and out. The display of just how much the other had grown in a month made the twins excited about this relationship even more.

Minako pulled his pants down slowly as Minato silently obeyed to follow this command and began pulling her panties down at the same time.

Minato stepped out of his pants and kicked them outside of the shower while Minako did the same, shutting the glass door to the shower and pressed her body to her brother's as he pulled the water switch on. There was nothing like a shower together.. And a little sex didn't hurt either.

Their bodies were practically aching for eachother.

Minato leaned in and kissed her as he rubbed a leg against her, causing her to start to pant lightly. "Please.." she begged, "Take me now.."

"Don't be impatient." Minato said as he kissed and sucked her neck, bring the showerhead down and switching the settings as he stepped back and held the showerhead at the same level as her clit, causing the girl to spasm in his arms.

The brunette gasped for breath as she tried moving closing to him, but ended up receiving the full power of the water washing down her legs. "Minato.. Minato.. Ahhh! I'm gonna.. gonna-" As she was close to coming, she noticed the water was now running down their bodies again and Minato had lifted one of her legs up, "Relax." he assured her as he kissed her and began to enter her slowly.

"Minato.." she moaned quietly, "I love you.."

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In tune, they rocked their hips together, holding onto eachother's wet bodies as their pleasure built up.

The blue-haired twin lost his footing eventually from the slippery shower and ended up falling on the floor of the tub, barely saving his head from being hit. His sister had been dragged down with him, and was sitting on his hips.

"I can make it go away." she smiled as she ran a hand through his long-ish hair, as she clarified that she meant that she wanted to take any pain he may have in his head. Sex was indeed a miraculous thing. The brunette placed her hands on her brother chest and began to push herself off of him, slowly falling down to meet his base again, repeating this motion until Minato began to get extremely tense.

"Can't..." he mumbled, as she stopped.

"Can't what?" she asked as she nipped his earlobe, eliciting a breathy gasp from his throat.

"Hold it anymore..." he answered, "Minako.. get off.." Minako shook her head and continued as her brother threw his head back. "Oh God Minako.." he sighed in ecstasy, "I can't come inside you... Ahhh!"

She smiled and sped up her movements as Minato began to lose control of his breathing. The brunette was pleased as she watched Minato squirm for her to get off of him. His back and hips were still hurting really badly, but it honestly did help that she was stimulating him further... It would be their first time without any kind of protection. It kind of scared Minato. But what were the chances of her having a baby, honestly? And they didn't have very long to live anyways.

"Come big brother..." she whispered as she leaned in and nipped his ear yet again.

That was all it took to break his concentration and he felt the unbearable wave of pleasure wash through his body. He could feel his sister spasming from the ecstasy, making it even more of a pleasurable experience. Before long, Minako collapsed on her brother's chest and smiled, a triumphant smile on her face.

"S-So..." she breathed, "How was it?" she asked as she kissed the panting Minato on the lips and reached up to shut the water off. The shower was long since cold and it was starting to irritate her skin.

"Better than I had imagined.." he muttered quietly, returning the kiss. "Now if you get pregnant-"

"-And I won't-" Minako cut in.

"-If you get pregnant, remember Minako.. it can't be mine." he finished, stroking her cheek as he sat up and pulled a towel around his little sister shoulders.

The girl smiled and nuzzled her brother. "I know." she said, "But I'd still be excited that I'd be carrying your child."

Minato shook his hair and laced his fingers through her long hair. "Whatever you say, Babe." he sighed, finally resigning from the argument and allowing her to simply rest on him as they caught their breath.

"I want to sleep with you.." Minako muttered as she kissed along his neck. It really sucked that they had to be so careful with their relationship, and not being able to bruise his neck made her insecure. It was a way of marking him as her own, but Minato didn't want anybody to start to catch on to their 'extra curricular activities' or suspect that something was going on between them as they tended to spend a lot of time together.

"It's Sunday tomorrow. You can rest with me in my room." He said as he ran his hands through her soft hair again. "I'll make up some excuse if you get in trouble.."

Minako smiled and kissed her brother, towel-drying herself and his body, and got up to help him get out of the tub. After they finished drying off, they quickly re-dressed in their old clothes, save for Minako borrowing her brother's top to sleep in, and went back up the stairs to sleep in the blue-haired twin's bed. Where Minako slept peacefully, now that she was finally beside the only person she could actually say she loved.

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ENDCHAPTER

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So, what do you guys think? I'm on the fence of making this an alternate storyline from Persona 3 Portable. And if you guys decide you want Minako to actually have a baby, I might use that in my story for later on.

I actually kind of struggled with this since this is my very first hetero lemon scene in a long time.

And seriously, I'll credit your Pen Name in the next chapter if you want to help me decide on their fates.

-Loki