Becoming Master
Copyright© 2026 by Megumi Kashuahara
Chapter 7
BDSM Sex Story: Chapter 7 - When Kiko confesses she's been in love with her stepsister Rin for six years, everything changes. The kiss that follows sends Rin spiraling—not with horror, but with recognition. As Rin reexamines every moment of their shared history, she begins to understand that what she'd called sisterly love might be something else entirely. Now they must navigate their feelings while living under one roof, knowing their parents may have suspected all along. A tender exploration of first love, identity, a
Caution: This BDSM Sex Story contains strong sexual content, including Ma/Fa Ma/ft Fa/ft Romantic Slavery Lesbian BiSexual School Incest Mother Son Brother Sister Daughter BDSM DomSub MaleDom FemaleDom Polygamy/Polyamory Interracial Black Female White Female Oriental Male Oriental Female Anal Sex Analingus Cream Pie Facial Lactation Masturbation Oral Sex Petting Pregnancy Sex Toys Squirting Water Sports Big Breasts Small Breasts AI Generated
At 6:30 when Kenzo came down for breakfast the girls were dressed perfectly, looking pretty as a picture. Midori was plating the food au natural. At forty-two, she was a fine-looking woman. Nice “B” cup teardrop shaped breasts, slender hips with a small pillow of a stomach from delivering three girls; slender legs with pretty little feet.
When the girls leave for school, I’m gonna fuck the shit outta mom!
While they ate, Kenzo asked Hikari if she was okay. She blushed, nodded, giggled and replied, “Better than okay, Master.”
Turning to Super Slut, he cocked his head and raised an eyebrow at Kioko. She smiled and asked, “Me? I’m happier than a pig in slop! Oooh, but still a little tender.”
Kenzo chuckled and slapped Midori on the butt. She just wiggled her butt a little and said, “Anytime, Master.”
The girls looked at each other, smiled, and Mioki whispered, “Momma’s gonna get some dick.”
Breakfast, as lively as it was soon finished. They each set their plates in the sink, collected their things and Kenzo stopped them before they got out of the door. “Mioki, do you know what to do with Mei Ling?”
‘I think so, Daddy.”
“Kioko?”
“Yeah, I got it, Master.”
“Good girls. Good luck today. You too, my pretty concubine.”
Hikari bowed her head and blushed. The other two giggled.
On the bus, Mioki sat in the middle and wanted to hear the juicy details. Kioko whispered how Kenzo fucked her ass deep and hard. It hurt a little, but it was a good hurt. Hikari giggled as she told how Kioko ate her pussy while getting her ass reaming and gave her three mind-blowing orgasms. Mioki commented that she would probably be next to get an ass fucking.
Kioko did not have Ms. Marin for math that day, but stopped by before homeroom. Claudette was very happy to see the small Japanese tart. After the greetings, Kioko asked her, “Where are we going to meet?”
“At a local motel, why?”
Kioko shook her head. “No deal. A small Japanese girl with a white woman? Too obvious and way too risky. We can meet at you place next Saturday morning. Do you want me to stay the weekend?”
Claudette swooned and replied, “That would be a dream come true!”
Kioko quipped, “My middle name is genie,” and giggled.
Claudette wrote her cell number and address on a sticky note and handed to her.
Kioko whispered. “Want another taste, I’m not wearing panties again.”
Claudette softly moaned as she slid two fingers up through Kioko’s slit, scooping up some little girl cream. She sucked her fingers then went back for seconds.
Kioko asked her. “can we meet for a few minutes after school?”
“Sure, I’ll be here.”
Kioko brushed a strand of hair behind her teacher’s ear, smiled and nodded then turned and left. Claudette put her hand over her lap and pressed her wet pussy.
Mioko made her way to her locker without any trouble, and saw Mei Ling there waiting for her. Her new Chinese friend was bubbly and genuinely happy to see Mioki.
She was a little surprised when Mei leaned up and kissed her cheek.
Mioki smiled then gently stroked her lips.
As they walked to homeroom, Mei Ling hooked her arm in Mioki’s.
Mei said, as they walked that she felt much safer traveling the halls with Mioki and was ecstatic about having a girlfriend we who understands what it’s like to be small and underdeveloped. Mioki nodded, smiled back and said she agreed.
In homeroom, Mioki said she was happy to have Mei as a friend. Mei beamed a 100-watt smile and pressed Mioki’s hand to her cheek.
At lunch, the chose the quiet solitude of the oak tree they sat at the day before. After sitting, they sat in silence for a few moments. It was as if both wanted to say something, but held back. Mioki asked, “When you were in Seattle, were you teased there also?”
“Some. But it was more from girls than boys. I guess they thought I was in competition to find a guy. In middle school lots of girls are small and flat chested, except for the eighth graders and all those girls had boobs, even if they were small.”
“Did you have a boyfriend or a boy you liked?
Mei blushed and nodded. “There was a cute guy in seventh grade I confessed to but he said I was too immature. He was being kind. At least he didn’t say it was because I didn’t have any tits.
“As for girls, I have seen girls that I was attracted to, but have never acted on it. No girl ever made a pass at me either.”
“What do you mean? You kissed me this morning.”
“You’re different.”
Mei did not expand, but said instead, “And you?”
“There is one, but it’s a unique relationship that you will learn about if we get closer. So do you like boys, or was it just that guy?”
“I guess I could like a guy that accepted me as I am.”
“Do you like girls? You know ... like ... as a girlfriend?”
“Mei looked tight at Mioki and said, “I was never against the idea even though I never seriously considered it, but...”
Mei lowered her head and was quiet for a long few moments. She looked up and admitted, “I have an extremely strong attraction to you. Right now, I really want to kiss you.”
Mioki looked at her, her face neutral for a moment, then softly smiled, patting the ground next to her.
Once Mei moved beside her, they looked at each other, their faces inches away from each other. Mioki leaned in and softly kissed her. They both licked their lips when they pulled away.
Mioki said, “Liking me is seriously complicated. Because I live A very ... unique life.”
“What do you mean?”
Mioki looked right at her and asked, “Before I answer that question. I need to ask you some very hard questions you may find difficult to answer.”
“Like?”
“Liking me means there’s sex involved—lots of it. Can you accept that?”
Shaking now. She answered haltingly, “I think so, but I have never done anything sexual except...”
“Except what?” Mioko asked.
“Except for playing with myself.”
“What do you think about when you masturbate?”
“I watch porn on my phone. Sometimes giving blowjobs or fucking, or a guy licking my pussy. I like the thought of getting fucked from behind, him pulling my hair.”
“Do you watch girl porn?”
“Yeah, occasionally. Getting licked by a girl or me licking her.”
She got really quiet and looked like she was going to cry. Mei dropped her head and with lowered eyes confessed “That you ordered me to lick you down there and make you cum, grabbing my hair and pulling my face into your cunny. You also made me stick my tongue in your butthole and worship you there. I also get wet when I even think about licking your tiny feet and toes.”
“Then you’re a submissive?”
“Yes, I pretty sure I am. I want to be yours and do everything you tell me to do.”
“Do you have any kinks Things like humiliation. Exhibition, being called nasty names, spanking, rough sex, bondage, watersports. Those kinds of things?”
Mei looked down and blushed wringing her hands in her lap.
“Answer me, or I’ll slap you.”
Mei tool a sharp intake breath, licked her bottom lip, nodded and whispered, “I want to be owned and used. That’s the one thing I dream about just about every night. My Master doesn’t have a face in my dreams, so I don’t know if it’s a guy or a girl. I guess that means that I don’t really care if it’s either one”
I would really like having a lot of sex with you. But ... but ... She then repeated, “I have never been with a boy or a girl. I don’t know what to do.”
“You’re gonna learn really quick.”
Mioki continued, “What do you have to say if I told you that I can make your fantasies come true if you became my slave?”
Mei was literally shaking. She brought her shaking hand to her mouth the answered, “Yes. Please own me, Mioki. I would really like to be owned by you.”
“To be my submissive slut?”
Still shaking, she nodded and replied, “Uh huh.”
“Before you make a decision, you need to know that if I take you as mine, you will also be a slave of the man who owns me. That you will need to serve many girls, but only one man.
“There are hard limits that will not be crossed. There will be no bestiality, scat, violence or abuse. Pretty much everything else is on the table. Will you do anything I tell you?
“Without knowing what you want, I think so.”
“If I or my sisters wanted to pee on you or in your mouth, would you drink it?”
“It wouldn’t make me sick, would it”
“No.”
“Can I think about the pee stuff? Would you give me to your sisters for sex?”
“Yes, you will need to think about all of this. You would also have sex with my mother. My brother is our Master. He owns all of the women in my family. If I claim you. You would ultimately be owned by him. Would you submit to sex with him. A grown man?”
“If I was owned by you and him. Then yes.”
“You would need to love all of my family as your family. You wouldn’t just be having sex with them. You’d be making love to them. You would also need to go with my family to get a contraceptive shot.”
“I understand.”
“Mioki, this is a lot to digest. But I want to show my willingness to seriously consider becoming one of your family and get the shot with the rest of your family. It won’t hurt me no matter my decision.”
Lunch period was nearly over, so Mioki asked Mei, “How do you want to interact together at school until you make your decision?”
Mei thought for a moment then asked, “If you owned me, what would I call you?”
“Since you’re only 4’7” tall. I think it would be both cute and fitting to show your submission if you called me Mommy. But, we need to be discrete. Where teachers or staff can hear, just call me Mioki. I could care less what other kids think: call me Mommy. I want you to walk right behind my right shoulder like we’re a couple. Okay?”
“Yes, Mommy.”
Mioki told her straight up. “If you become mine. You need to make a solemn promise to do everything I tell you. Can you do that?”
“Mei was breathing hard, thinking ... I promise to obey you always I think I can even do the peeing thing.”
“Do you? Do you really?”
She was now shaking. “I ... I ... I think so.”
“If I wanted to pee in your mouth, would you drink it,”
Mei swallowed hard. She lowered her head thinking for a moment, then silently nodded.
“Mei? Look at me sweetie.” She did.
“This is forever. If I claim you. You are mine, forever.”
Mei nodded. “Forever.”
“Let’s go.”
They dumped their trays and Mioki led Mei to the nearest restroom. She pulled her into a stall and made her kneel, then Mioki pulled her panties down and asked, “Will you?”
Mei swallowed hard, tilted her head back and opened her mouth. Mioki put one foot on the toilet. “Cover my pee hole with your mouth.”
Mei leaned in and pressed her mouth to Mioki’s pussy.
Mioki gently released her bladder and began to fill Mei’s mouth Her eyes widened as the warm fluid filled her mouth, she started gulping quickly to keep up with Mioki’s flow and not spill any.
When Mioki was finished, she ordered, “Now lick me clean.”
Mei dutifully obeyed. When she finished, she was panting and looking up softly said with a quivering voice. “I love you, Mommy. I am yours forever.”
“Good girl. Now lick my clitty and make Mama cum.’
Mei leaned in placing her hands on Mioki’s thighs and started to flick her tongue across the top of Mioki’s button.
Mioki groaned and grabbing a handful of Mei’s hair. Pulled her hard into her slick wet cunt. After a few minutes. Mioki started to keen a soft “Ooh! Ooh! Ooh! I’m gonna suirt in your mouth, drink all of it!”
Mioki came hard and shot four good pulses of her cum into Mei’s mouth. Mei could not keep up with it and the last spurt ran down her chin and soaked the collar of her blouse.
Panting, Mioki pulled her panties back up pulled Mei to her feet and kissed her hard.
“Mei Ling, you are mine now. I will put a collar in you so everyone will know you are owned. Do you understand?
“The next thing is for you to come to my house, and make I’ll make your dreams come to life. How do you feel?”
“My heart is racing, I’m so wet and squishy down there, it feels like I peed myself, and I just want to cling to you. You’re all I can think about. I’m very happy I belong to you.”
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