Author's notes

I know people will judge me but you know what? I like the idea of Mion x Shion and because there is no story about these twins yet so I shall make one. Rated M! (If you guys are really appalled by this, well then stop reading)

Disclaimer: I own nothing; Higurashi or their characters or anything that deals with the game.

"Sis you in here?" Shion opened the door to the Sonozaki house and stepped in. She knew that her twin sister was in here because Keiichi called her, concerned over his friend's strange behavior. Ever since Shion moved back into Hinamizawa, Mion has been acting weird, more cheerful when she was alone with her friends but whenever Shion came into the picture, Mion became very jumpy. Including the fact that Keiichi moved in her after Shion, he didn't really notice Mion's strange behaviors; at first. But last week when everyone decided to have a picnic on the shrine grounds, it became apparent to him then. Shion decided to pay everyone a surprise visit and bring some food in case there was not enough to go around, knowing Keiichi and Satoko's appetite. She walked behind Mion and gave her a little scare, pretending to be Oyashiro and saying that she cursed her dear sister for her sinful thoughts. After that, well Mion wouldn't look at her twin throughout the picnic and whenever Shion tried to talk to her, Mion would quickly ask someone else a question so she wouldn't have to talk to or look at Shion.

Shion walked through the house calling out everyone's name, "Mom, dad, grandma, Mion?!"

Shion turned the corner and heard a little moan. Curious, she followed the moan to the door of her sister's room. Putting her ear on the door, she heard a moan that suspiciously sounded like her sister saying, "Oh god~, yes~!" Knowing that she shouldn't be listening to whatever Mion was doing alone in her bedroom, Shion quickly turned around to walk out of the house when she heard Rena's voice. "Ah~, I- I think I'm going to cum~!"

Unable to resist catching her sister in a sinful act (remember this is in the 1983s, people weren't all cheerful with gays back then), Shion bend down to look through the little key hole to her sister's room. She saw Mion and Rena naked on Mion's bed. Mion was wearing a black strap on and was thrusting it into Rena like there was no tomorrow. Rena was on her hands and knees in front of Mion and was rocking her body in rhythm of Mion's thrusting, getting more of the strap on in her. Mion threw her head back as she moaned, "Oh fuck~! I'm going to cum!"

Rena looked back and moaned, "Me- me too~!"

Shion watched as her sister pounded into Rena and was even able to hear slapping noises when their hips met. She felt herself become very wet and slipped her hand into her skirt. She moved aside her underwear and rubbed her clit, biting her free hand's pointer finger to keep in her moans. Mion and Rena were covered with sweat and were obviously close to cumming. Mion took out the strap on and Rena tuned around, so her breasts and pussy were facing her. Mion grabbed Rena and lifted her, groping her ass as Rena bounced herself up and down to get the strap on in her. Rena came first, she clung onto Mion while moaning/screaming, "Keiichi~!" Mion threw her head back and came while moaning, "S- sis!"

Shion stopped her masturbating as she stared at her twin. Did- did Mion just moaned 'sis'? No she had to be referring to Rena. Yeah that's it. They must've been roleplaying. Mion grabbed Rena's chin and pulled her into a passionate kiss. Mion slipped her tongue into Rena's mouth and explored it. Soon the two women were battling for dominance. They quickly broke the kiss when they needed to catch their breath. They laid back down on the bed, Rena resting half of her body on Mion while she wrapped an arm around Rena's shoulder, stoking the flesh there with her thumb. When their panting finally died down, Rena got up and straddled Mion's body. She looked down and Mion became very interested in the lamp beside the bed.

"Mion, look at me." Mion glanced at Rena.

Mion sighed, "Look, we already talked about this. Once in awhile we would mess around to help with our sexual tension. You would imagined that I was Keiichi and I would imagined that you would be my- my sister."

Shion stared at Mion, wide eyed through the key hole. Mion was- was having sex with Rena while pretending she was sleeping with- with me. Mion looked at the lamp again and Rena sighed.

Rena said, "Well what are you going to do if I do start dating Keiichi?"

Mion moved her head and stared at Rena for awhile. She leaned up and grabbed Rena's breasts, pinching her nipples. Rena gave a soft moan and grabbed Mion's head. Mion brought her head to Rena's right nipple and flicked it. Pulling back, Mion yelled, "I- I don't know, okay?! I just- I just don't know." Mion massaged Rena's breasts while admitting, "I know that I shouldn't be having these thoughts about my flesh and blood, my own fucking twin sister no less! But I do know this..." Mion moved one of her hands to play with Rena's pubic hair, "I am not going to get caught. As long as neither of us don't tell anybody about me liking Shion then no one will know." Mion narrowed her eyes, "You aren't going to tell anyone are you?" Rena shook her head while her hips were rocking back and forth, trying to get Mion to touch her clit. Mion chuckled and asked, "What's wrong Rena?"

Rena hated that Mion always teased but on the other hand, it made the sex so much better. Rena knew Mion's weak point and said in a voice sounding just like Shion, "Please sis. I- I want you to fuck me." Mion snorted and plunged two fingers inside Rena, not bothering to be gentle with her. Rena moaned out, "Yes~!"

Shion walked away from the scene before her and quickly left the house. She got in her car and Kasai looked at her shocked face. "So did you figure out what's wrong with Mion?"

Shion jumped when she heard her sister's name and replied, "It depends."

Kasai looked at her with an eyebrow raised, "Depends?"

Shion nodded, "Depends on who's perspective it is."

The next day

Mion and Rena walked to school with Keiichi as usual. What was not so usual was that Rena was wearing a light blue scarf around her neck in the middle of spring. Keiichi looked at the scarf and asked, "What's with the scarf?"

Rena blushed and Mion just chuckled, "Yeah Rena, its gotta be like sixty degrees out her."

Rena glared at Mion and said, "Oh its nothing, I just got bit by an annoying bug." Mion giggled which didn't go amiss by Keiichi. He just raised an eyebrow and walked on in silence, wondering what was up with his two friends.

In a few minutes they reached the school. Keiichi walked into the classroom and noticed that Mion and Rena disappeared. Shrugging, Keiichi just took his seat and took out his homework.

Mion grabbed Rena's hand and ran into the bathroom when Keiichi wasn't looking. Rena just signed and went with her. Once Mion made sure no one was with them, she grabbed Rena and pulled her into a lustful kiss, groping her ass. Rena kissed back, shocked at first but quickly grew used the kiss. Mion grabbed Rena's legs and lifted her up, causing Rena to wrap her legs around Mion's waist and her arms around Mion's neck. Pulling back, Rena asked, "Seriously? Right now?"

Mion shrugged, "I had a really good dream last night. I was covered in fruits and sweets and sis was slowly licking the whip cream off my boobs and well I need this really bad." Mion blushed when she described her dream and Rena's eyes slowly got brighter and brighter.

Mion noticed the eyes and gulped in fear. Rena grinned and yelled out, "OMOCHIKAERI! I'M GOING TO TAKE YOU HOME MII-SAN!"

Back in the classroom Ms. Chie, along with everyone else, heard Rena's yell and Mion's scream right after it. Ms. Chie sighed, "I guess Ms. Sonozaki and Ms. Ryuugu won't be attending class today."

Rena meanwhile was running home while giving Mion a piggyback ride. Mion had no choice but to hold onto Rena for dear life. On the way to Rena's house, they actually passed Shion heading to the school and she yelled after them, "Sup sis!" Mion tried to wave back but was too afraid to let go of Rena.

Rena finally reached her home and let go of Mion. Mion was weighing the probability of her getting away while Rena was unlocking her door but she knew that she would lose. Rena opened the house door and looked back at Mion. "Well come on in!" Mion stepped inside the house and saw a modest living room. Never having witnessed what Rena did after she brought something home, Mion was a little scared.

Rena grabbed Mion's hand and walked her to her room. As soon as Rena closed the door, Mion trapped her against the door, placing both arms around her body and one leg between Rena's slightly parted legs. "So Rena, why did you take me home? Did you hope that I would become your little plaything?"

Rena sighed and replied, "Mion please not today."

Mion saw how serious Rena was and pushed away from the door. Standing with her arms crossed Mion asked, "The why did you kidnapped me?"

Rena replied, "Because we have to talk."

Mion raised an eyebrow, "About?" Rena sighed again and pulled off her scarf.

Pointing at her new hickeys, Rena said, "You can't be so rough with me, especially if we don't want to get caught."

Mion chuckled and said, "Me biting and sucking your neck didn't seem to bother you last night though. In fact they never seemed to bother you."

Mion closed the distance between her and Rena and pulled Rena into a loose hug. She brought her head to Rena's neck and licked the length of it. Rena shuddered and moaned out her approval. Mion licked up Rena's ear and whispered, "Are you sure that you don't like my little love bites?" Rena nodded but her moment's hesitation told Mion otherwise. Mion brought her head to Rena's neck and gave it a light suck. Rena's body became rigid as she felt Mion's teeth lightly graze her neck, eventually becoming rougher and giving her yet another hickey.

Rena grabbed Mion's shoulders and pulled her closer. Rena spoke in Shion's voice again, "Sis please stop teasing me." Mion felt her lust go aflame and lifted Rena to carry her to Rena's bed. Laying her gently on the bed, Mion walked to Rena's closet and opened it. Being in Rena's room far more times than she could count, Mion knew where Rena kept her secret vibrator. Grabbing it, Mion turned around to see Rena already naked.

Mion chuckled and said in a poor imitation of Keiichi's voice, "What's up babe. Do you want this lovely toy inside of you?"

Rena nodded and said, "Mion its okay. You don't have to pretend to be Keiichi now, but you can still pretend that I'm Shion."

Mion looked surprised, she thought that the only reason why Rena was having sex with her was because she was too shy to ask Keiichi out and eventually having sex with him instead. Mion said, "No Rena." Rena looked concerned for a second when Mion explained, "If I don't have to pretend to be Keiichi for you, then you don't have to pretend to be Shion for me."

Rena giggled and replied, "Well that's a relief, I was starting to get a little scared by how good I was getting at imitating Shion, unlike you." Mion raised an eyebrow and Rena explained, "Your imitation of Keiichi kind of sucks."

Mion laughed and yelled, "Oh now you are going to get it!" Mion ran to the bed while stripping off her clothes. She jumped on the bed which caused Rena to giggle. Mion grabbed Rena's face and pulled her close. She slipped her tongue in Rena's mouth and dominated her tongue. Mion knew that Rena liked things to be a little rough so she grabbed both of her wrists with one of her hands and placed them above Rena's head. Mion then dragged her free hand's fingertips down Rena's side which caused Rena to laugh into the kiss. Mion broke the kiss to hear Rena's laugh.

Mion placed her head toward Rena's left breast and gave the nipple a quick suck. Rena looked up to watch Mion as she licked Rena's nipple with her tongue. Mion looked up at Rena as she gave the nipple a nip. Rena gasped out in pain and her hips lifted. Mion chuckled and slowly kissed down Rena's body, licking and nipping at the flesh occasionally. Rena was in heaven, she loved it when Mion and her relieved each other's sexual tension. She knew that she would have to tell Mion that she was going to finally ask Keiichi out and stop sleeping with her but decided to break the news another time.

Mion finally reached Rena's little patch of pubic hair and gave it a little lick. She went lower and was about to lick Rena's clit when she felt Rena pull on her ponytail. Looking up Mion asked, "What's wrong?"

Rena answered while blushing, "Its just that I- I wanted to lick you as you lick me." Mion smiled and reposition herself so she was facing Rena's wet pussy while Rena was facing hers. Mion turned on the vibrator and traced Rena's lips with it, causing Rena to moan out. Rena felt a little bold a brought her hand up to spank Mion's ass. Mion gave a little yelp of surprise that quickly turned to a moan.

Mion pushed the vibrator inside of Rena the same moment Rena grabbed Mion's ass and brought her lips to her pussy. Mion moaned as she fucked Rena with the vibrator, feeling Rena flick her clit and dragging her tongue down the slit to lick up her juices. Mion bent her head to lick Rena's clit to help her reach her limit faster. Rena moaned out, "Oh god~ Mion please fuck~ fuck me harder!" Mion responded by speeding up her thrusting and licking Rena's clit faster. Rena fought against her daze caused by the incredible sex to pleasure Mion as well. She spread Mion's lips and licked at her core, knowing it would drive Mion insane.

Mion threw back her head and moaned out, "Yes Rena~ tongue fuck me just like that~!"

Both women knew that they wouldn't last much longer and enjoyed the ride to their climax. Mion and Rena were shivering with ecasity and moaning at the top of their lungs. Rena was rocking her hips in sync to Mion's thrusting while still eating her friend out. Mion was shaking her head with a little drool coming out, imaging her sister sitting in a corner, masturbating to the sight before her eyes. Mion moaned out, "Ah~ Rena I'm about to, oh~, reach my limit~"

Rena pulled her head back to reply, "Mm~ Me too~" Mion and Rena began to fuck each other with all their might. Both women came at the same, Mion moaned out, "OH FUCK~!" while Rena just moaned, "YES~!"

Mion and Rena licked each other clean to help ride out their orgasms. Mion crawled off of Rena and snuggled up to her. Rena couldn't lie to Mion anymore, she grabbed Mion's chin to get her to look at her. Rena began, "Mion I- I'm going to-"

Mion interrupted, "Ask out Keiichi? Yeah, I know." Rena stared at Mion and she said, "Come on Rena, even though I act all air-head sometimes I'm not too stupid to not notice you staring at Keiichi all the time."

Rena nodded and asked, "What are you going to do now without me as an outlet?"

Mion answered truthfully while staring into Rena's eyes, "I'm going to tell Shion that I am in love with her and hope that she doesn't tell anyone else about my shameful thoughts."

Author's notes

Tada! I think the first chapter came out pretty good if I say so myself. :P