My name is Philip. I’m 18 years old. I live with my parents and my 20 year old sister Rena. Rena and I both attend a local junior college. I’m majoring in computer science. Rena is majoring in dating and partying. I don’t think she is interested in graduating. We commute to and from school by bus. Our schedules match up pretty well so we are often able to ride the bus together.

Anyway, it started on the bus ride home. It was pretty crowded so Rena and I had to stand, nothing unusual given the time of day. I usually zone out on the bus ride home. Rena usually digs out her phone and starts texting. I was standing right behind her. She took me by surprise when she backed up and wiggled her butt against my crotch. My dick leaped to attention.

“What the heck, Rena!” I exclaimed. “Why did you do that?”

“Why did I do what?” my sister responded.

“You know what I’m talking about.”

“No, I don’t,” she said. “I’m just standing here texting my friends and minding my own business.” Then she backed up again and rubbed her butt against me. Rena is plenty pretty with a body that tended to be overweight, but sexily so. I think zaftig would be the term used. She takes after our mom that way.

“I’m talking about that ... with your butt.”

“Incidental contact,” she asserted still paying attention to her texting.

“Bullshit,” I said.

“It’s called chikan.”

“Chicken?”

“C-H-I-K-A-N. It’s big in Japan. It’s where guys grope the girls on the bus or subway, but it can be anywhere else, too. The women and girls mostly just put up with it because they’re usually too embarrassed to report it. I saw a couple of videos of it online.” I could have pointed out that she was the one groping me, but I’m sure she already knew that. I made a mental note to look up chikan videos when we got home.

“It sounds like it could be dangerous.”

“That’s why I’m just trying it with my little brother. Don’t you like it? You must,” Rena continued. “I can feel your stiff dick prodding my butt.” This time she moved back against me and stayed there. Shit! I did like it.

“That’s not all I’d like to prod,” I said and pushed back a little. I was as subtle as I could be. I didn’t want us to be seen by other passengers.

“You wish,” Rena answered with a giggle.

“If you keep teasing me I may not give you a choice, slut.” Would I be willing to fuck my sister? I had to answer yes to that. Would I be willing to rape her? That was a definite no. I knew someone was going to rape her if this was her standard behavior around guys.

“You’re talking rape and incest, little brother. That is just plain nasty,” she declared. “Maybe you’re not as safe as I thought.” My statement didn’t prompt Rena to move away, though, or even be subtle about it. I took a quick look around and no one seemed to take notice of us or knew we were siblings so I just enjoyed the rest of the bus ride prodding Rena’s butt until we arrived at our stop and disembarked.

“I’m on the pill,” Rena said as we made our way home.

“Huh?”

“I said that I’m on the pill,” she repeated. “I’m on birth control and you wouldn’t have to worry about getting me pregnant. Also, I make my sex partners wear condoms. I mean I kind of like the idea of sleeping with you, but having your baby would be kind of weird, don’t you think?”

“Are you serious, Rena?” I asked. “I mean a few minutes ago I thought we were just teasing each other. Now you’re saying that having sex with me is a good idea?”

Rena nodded her head. “I understand what you’re getting at. I guess that makes me a slut. Don’t tell Mom or Dad.”

“I won’t,” I promised.

“And I’m sorry about teasing you. Are you serious about wanting to sleep with me?”

“Uh, sure,” I responded. “I’ve had fantasies about you for years. Also, if you hadn’t been teasing me, I would never have realized the uh ... interest we have in each other.”

Rena smiled and took my hand. “I’m glad,” she said. “I have a couple of friends who have been sleeping with their brothers for years. They said I should try it, but I was too afraid to ask if you wanted to have sex with me.”

“I would have felt the same about me asking you,” I said. “Uh, don’t tell your friends what we’re planning, okay?”

“Okay, if that’s what you want,” Rena said. We walked into the house and the first thing Rena did was plaster herself against my body and kiss me right on the lips with Mom standing right there watching us. I’m dead meat was my first thought. I think it would be safe to say my sister Rena can be rather unpredictable and impulsive.

“What do you think you’re doing kissing your brother like that, Rena?” Mom asked. I couldn’t detect any alarm in her voice yet, just curiosity.

“I’m just showing my new boyfriend how much I love him,” my sister responded. “I’ve decided we don’t show each other enough love around here.”

“He’s not your boyfriend,” said Mom. “He’s your brother.”

Rena disengaged from me and then hugged and kissed Mom the same way. “My goodness,” Mom exclaimed. “What has gotten into you?”

“Love has gotten into me, Mom,” Rena declared. “Now share a kiss with Philip and he can be your boyfriend, too.”

“I’m not going to kiss my own son like that,” Mom protested. “He wouldn’t want me to anyway.” I didn’t know what kind of game my sister was playing, but I figured I had better play along.

“Why wouldn’t I want to kiss my beautiful mother who’s also a sexy woman?”

“Did you hear that, Mom,” Rena asked. “Philip thinks you’re sexy and I happen to agree with him. In fact, if I look as good as you when I’m your age I will be very happy.”

“But-” Rena gave Mom a little push into my arms and stepped up behind her sandwiching her between us. I was standing against the kitchen wall so I wasn’t going anywhere. I couldn’t help it. I popped a boner. There as no question that Mom could feel it, but she was the one looking apologetic. I kissed her gently on the lips. My mother was blushing, but she wasn’t trying to pull away either.

“That was nice,” Mom said. “Thank you.”

“It was my pleasure,” I responded.

“I have to get dinner started, okay?” I nodded and Rena got out of Mom’s way.

“What was that all about?” I demanded of my sister when we went upstairs. “You scared the heck out of me.”

Rena giggled. “I guess I acted on the spur of the moment. Mom is starved for affection because Dad seems to have lost interest in her.”

“What does that have to do with us?” I wasn’t privy to what went on in my parents’ intimate lives and it still didn’t make sense.

“If we’re going to be together more than once or twice we need an ally in the house or we risk discovery.” That made sense.

“But Mom will never approve of what we’re planning,” I said. “She’ll tell Dad and I’ll get my ass kicked out of the house.”

“If you haven’t noticed, Mom is a submissive and needs someone to dominate her,” Rena responded. “She’s starving for attention. Dad hasn’t been doing his job and so you’re going to take his place. I swear you could have done almost anything you wanted with her after you kissed her.” I wasn’t so sure about that. I could imagine things backfiring big time.

“I’m not so sure about this anymore, Rena.”

My sister just smiled. “You’re not sure you want to fuck my pussy?” She caressed the bulge I had going. “You’re not sure you want to shove your dick down my throat or between my fat ass cheeks?” She unzipped my fly and freed my prick.

“I ... I am sure about that part,” I assured my sister. The thought of doing that to Rena had me ready to cream into her hand at that very moment.

“Mom and I come as a package deal, sweetie.” She was still fondling my prick.

“You seem to know what you’re doing, but Mom seems vulnerable and I don’t want to wind up hurting her.” I knew I was whining. I wanted to fuck Rena right where she stood, but she was in control.

“I do know what I’m doing, Philip,” Rena responded. “And I’m very glad to know you don’t want to hurt Mom because I don’t either. When I said Mom was a submissive and needed to be dominated I didn’t mean she needed to be humiliated ... too much. I’ll teach you how to do it right. You won’t regret it. So, are you interested?”

“Ah!” I gasped and spurted a big wad of cum into my sister’s hand.

Rena smiled. “I’ll take that as a yes?” I nodded my head.

“Good,” she responded. She licked my wad from her hand and swallowed. “I have to wash up and change my clothes.”

I went to my room and sat down at my desk. I felt as if I was in a fantasy with Rena offering not only herself, but our mother also. Of course it would be a nightmare if anything went wrong. I had plenty of reading to do, but instead I fired up my laptop and started watching porn. On the search bar I typed in chikan videos and one of the titles caught my eye. It was called “Office Lady Groped on the Bus.” It wasn’t more than 20 minutes long so I clicked on the video and started watching. There was no dialog, but that didn’t matter. The video was produced in Japan and I didn’t understand Japanese anyway.

The plot involved this woman who boards a public bus basically standing in the aisle and minding her own business. Before long, a man moves up behind her and starts brushing her hips with his knuckles as if it was incidental contact. The woman ignores him and the man gets bolder caressing her hips. She brushes his hand away a couple of times, but he is not discouraged. The office lady doesn’t resist after her first few rebuffs are ignored and the man doesn’t waste any more time. Before long he has stripped her of her panties and pulled the woman’s bra above her tits. Before the video is over the office lady has sucked the guy off and been thoroughly fucked. The other bus passengers conveniently face the other way and ignore the action as if they are unaware of what is going on or are simply giving the pair their privacy.

The video didn’t do much for me. The actors’ genitals were censored. What was the point to that? I started imagining Rena in place of the office lady and me in place of the guy fucking her. Yeah! Now I was getting into it. I couldn’t imagine anything like that happening in the U.S. In this country women would be screaming for help, attacking the assailant with pepper spray and calling the police all in about a nanosecond.

A little online research told me chikan was a groping fetish in Japan and it was quite a problem for women and schoolgirls on the subways and buses there. So much so that the Japanese public transit authorities started adding women-only cars to commuter subways and trains during rush hour. In a crowded space where there’s not much chance in getting caught, I guess even the normally polite Japanese male can be tempted to let his hands roam if he thinks he can get away with it.

I was half hoping Rena would come knocking on my door so we could get something started, but she didn’t. I went to her bedroom door and knocked. There was no answer so I decided to go down to the kitchen for a snack. That’s where I found Rena helping Mom fix dinner. She was wearing a short skirt and knit top.

“Hey Philip,” Rena called. “Like what you see?” My sister pulled up her top with one hand and her skirt with the other. I found myself gawking at her bare tits and pussy. I wasn’t the only one staring.

“Rena!” Mom yelled. “Cover yourself this instant!”

“I was just teasing him, Mom,” said Rena. “I won’t let him do anything ... right now. We’ll wait until tonight.”

“What? You two are planning to have sex together?” Mom started to look kind of nervous as if she wanted to make her escape. “I think I need to sit down.”

“I can finish up,” Rena said. She whispered in my ear. “Go sit with Mom. Flirt with her.” I nodded although I wasn’t sure what I was going to do.

“Let’s go sit in the den, Mom.” I grabbed her hand and she let me lead her. We had a reasonable amount of privacy there. We sat down on a love seat. I placed my hand around her shoulders. I let my free hand drape on her thigh. We were seated together like lovers, but Mom seemed oblivious.

“Please tell me this is some kind of a joke you two have cooked up,” Mom whispered.

“I don’t know if it’s a joke or not,” I said. “Rena hasn’t let me know yet.”

“And if it isn’t?”

“That would make me very happy.”

“You can’t be serious.”

“Mom, haven’t you ever fantasized about making love to someone in particular?”

“Of course I have,” Mom replied, “many times with many men, but the fantasies were never realized.”

“It’s the same with me; thousands of times with thousands of girls and women.”

That made Mom smile. “Oh my,” Mom responded. “Thousands?”

“Thousands,” I affirmed. “One of them is Rena. Another one is you.” I caressed her thigh and Mom gasped. She covered my wandering hand with her own, but didn’t push mine away.

“That’s not possible. Rena is your sister.”

“And you are my mother,” I responded. Our faces were so close together I could feel the puffs of breath on my face as she spoke.

“But what if your father finds out?” I wasn’t sure if Mom was talking about Rena and me or her and me.

“We’ll have to be careful so he doesn’t find out, Mom.” I kissed her then gently like the first time and Mom practically melted. I felt like I could get more assertive with my mother, but then I heard Rena yell that Dad had just pulled into the driveway. Mom gasped and stood up.

“Don’t ever try that with me again, young man,” Mom said. “I belong to your father. And ... and no more of this monkey business with your sister either, if you know what’s good for you.” She left without waiting for a response from me. Well, I didn’t have anything to say anyway. That did not go well at all. I walked back to the kitchen and gave Rena a thumb down gesture when she saw me. She smiled and shrugged her shoulders in response.

“Please set the table, Rena,” Mom said.

“Yes, Mother,” Rena responded quite formally which was quite out of character for her. I guessed Mom was feeling kind of guilty because she doted over Dad getting him this and that which was stuff he usually got for himself. Dad didn’t mind the extra attention, but he didn’t seem to appreciate it either. Not too much later we sat down to dinner.

Dinner conversation was the usual for a Friday, plans for that evening or weekend. Rena said she was going to call a girlfriend and ask her if she wanted to go to a party since her prior plans had been unexpectedly changed. I said I didn’t have any plans so I was just going to hang out around the house and surf the web on my PC.

“What about you two?” Rena asked.

“We’re going to the movies,” said Mom.

Dad got a sour look on his face. “I dunno,” he said. “I’ve had a rough week at work. I’d rather stay home and relax.”

“I wanted to see a movie tonight,” Mom whined.

“So see a movie,” Dad responded. “That’s what we have Netflix for.” Mom just shrugged her shoulders.

“We never go anywhere anymore,” Mom whined again.

“I’ll take you, Mom,” I said surprising myself.

Both Mom’s and Dad’s faces lit up. “You will?” they chorused.

“Sure I will.”

“You’re going on a date, Mom,” Rena exclaimed. “That’s great!”

“You don’t have to do that,” said Mom. “I’ll just stay home with your father.” I think she was being a bit apprehensive after what happened in the den.

“What do you mean he doesn’t have to,” Dad said. “You just said you wanted to go see a movie. Now’s your chance. You know how I hate going to those overpriced multiplex cinemas when we have a perfectly good TV set at home. Philip would be doing us both a favor.”

“I would rather go out with you,” Mom told her husband. “It doesn’t have to be the movies.”

“Don’t worry, Mom. I’ll be a complete gentleman.” Dad and Rena laughed along with me. Mom just frowned.

“Heh! Now don’t go disappointing your mother,” Dad said. “Take her out for a drink after the show. After one glass of wine she’ll be putty in your hands.”

Mom glared at Dad for a moment and then said, “I will be very happy to go out with you tonight, Philip.”

After dinner Dad handed me a wad of cash. “I really appreciate this, son. I can’t stand the movies your mother likes.”

“Thanks, Dad.”

“She doesn’t have a curfew,” he said and winked.

I had a chance to talk to Rena while Mom was getting ready. I told her what happened in the den and what Mom said to me.

“She told me just about the same thing in the kitchen,” Rena said and giggled. “Gosh! Dad is practically driving Mom into your arms.”

“I don’t think that will happen anytime soon if ever,” I responded. “Mom made it very clear she isn’t interested.”

“It won’t happen if you let her make all the decisions. You’ve got to learn to assert yourself.” I just shrugged my shoulders. I think I’m too easygoing to get into this domination bullshit, especially with my own mother. Maybe I should get a girlfriend was my next thought and forget this incest fantasy with my mother and sister. My last girlfriend and I broke up just before school started. It was an amicable breakup. She was on her way to an out of state school and I was staying here. We both realized a long distance relationship wasn’t going to work. We gave up our virginity to each other so at least I had some fond memories. Oh well.

Mom dressed casually in a blouse and slacks. I drove her car and we arrived in plenty of time. Now sitting in an auditorium waiting for a movie to start these days just forces one to watch nonstop commercials with the volume so loud you can’t talk to the person next to you. I didn’t want to go through that. I spotted a wine bar nearby which reminded me of what Dad said about Mom not being able to hold her liquor. Anyway, I steered her through the door before she realized where we were. I ordered a half carafe (two glasses) of white wine for her and a bottle of mineral water for myself.

“I don’t want any wine,” Mom said after I ordered.