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Book:Mummy & Daddy's Naughty Diary (Erotica) Published:2025-2-6

Peter Fucks Sister Kat & Aunt Delia
Kat visits her aunt and seduces her brother Peter.
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Aunt Delia and I had stayed in touch after my first visit to her fabulous mansion last year. No one could have prepared me for the life-changing events that Delia made possible. The rumors were that our mandatory trip to the country when we turned 18 was to visit with a crazy old aunt. Well, Delia is neither crazy nor old.
Though she’s in her forties, and older than my mom, she is an incredible beauty. She gently and lovingly introduced me to lesbian incest sex. Then she invited her brother, Uncle Nikolai to visit, and I gladly gave up my virginity to his wonderful cock.
Though sworn to secrecy, I confided in Mom what had happened. As it turned out, she too had slept with Nik and Delia. We ended up in a wonderful lesbian mother/daughter relationship of our own.
Delia said I could come back and visit her anytime. She even gave me an unlimited train ticket to help make it happen. Though I was now 19 and away at college, I couldn’t resist paying her a visit over my break. She said my timing was perfect as my brother Peter was staying with her, during his 18-year-old trip.
What I didn’t know was whether Delia had seduced Peter. Sometimes, Delia said, visits were just that – a good time in the country. As the train pulled into the station, I wondered what sort of brother I was going to find.
“Kat!” Aunt Delia called as my rideshare dropped me off at the giant gate that protected her estate. She opened the gate and rushed out to greet me.
“You could have let me know and I would have met you at the station!” Delia said, pulling me in for a hug.
“I wanted to surprise you,” I said.
“And what a pleasant surprise it is,” Delia said.
She squared my shoulders and leaned in for a kiss. This was no aunt and niece kiss either. Our lips met and immediately I felt her tongue push into my mouth. I felt intense pleasure rush through me as her tongue played over mine. Her hands reached my hips, pulled apart my cheeks and squeezed them.
“I’ve missed you so much!” Delia said as she broke off.
“I’ve missed that tongue in my mouth, and on other places!” I said.
“Ooh!” Delia said, taking my hand and leading me up the walk. “So naughty. I love it!”
“I understand Peter’s here?” I asked as we neared the front door.
“Oh yes,” Delia said, opening the door. “We’ve had a wonderful time.”
“And by wonderful, do you mean…?”
Delia winked. “You’ll just have to ask him.”
“Kat!” Peter called out from the top of the stairs. “What’re you doing here?”
“Hey Peter,” I said, looking up. “Delia didn’t tell you I was coming?”
“She said someone was,” he said, coming down. “But not who.”
We hugged, very brother and sisterly.
“Let me get your bag. Where’s she staying?” Peter asked, making his way out the door.
“In the room next to you,” Delia called out after him.
When Peter returned, the two of us headed upstairs. We walked by Delia’s room, and it brought back memories of watching her masturbate and later having her eat out my pussy in her bed. Peter was staying across the hall from her, and I was in the next suite down.
Peter flopped my bag on the couch in my room and sat down next to it.
I sat on an easy chair across from him. “So… how’s your trip been?” I asked.
“Um, it’s been good,” he said, a little too nonchalantly.
“You and Aunt Delia getting along okay? Found enough things to do?” I asked.
“Oh, yeah,” Peter said. “Delia’s great. Lots of fun things to do around here for sure. Have you seen the game room?”
I couldn’t get a read on whether Peter had had sex with Aunt Delia. He seemed pretty much the same, maybe a bit calmer for some reason. And maybe more handsome. My sexual awakening, and the realization that our family was open to incestuous relationships, had changed my outlook even about my siblings.
Peter’s 6’1″ frame was very athletic. Brown hair cut short, a maturing face, big chest and muscular legs. I’d been surprised that he’d had only one girlfriend that I knew of. I wondered if he, like me, was a virgin at 18. He was very good looking. Something in his demeanor was different, though, although I couldn’t say exactly how just yet.
“Hey, want to go for a swim?” I asked. “It’s so hot and Delia has such a great pool.”
“Sounds fun,” Peter said. “Meet you down there.”
Peter left and I closed the door, most of the way. Going into my bathroom I opened my bag and pulled out the very sexy suit Mom bought me.
I stripped off my clothes and admired myself in the mirror. At 5’5″, I was quite a bit shorter than Peter, but the same height as Delia. I cupped my breasts which had grown larger in the past year. I even licked one of my nipples like I’d seen Delia do. It made it hard. My brown hair fell below my shoulders, but had a hairless pussy.
I put on the suit, which was a two-piece that tied around my neck. The top was very revealing and showed a great portion of my boobs. The bottoms were a tiny rectangle of fabric just big enough to cover my pussy lips.
I hesitated for a moment before going out. Was this appropriate to wear in front of my brother? Maybe I wanted to be a bit risque for Delia and, even for Peter?
Peter and Delia were already in the pool when I walked out. Delia was also wearing a very small suit that did little to hide her ample bosom. It made me wonder even more about what they’d maybe done with each other.
“Hey Kat, come on in!” Peter called out.
I stepped down into the cool water. It felt so good. Delia swam over to me and gave me a quick kiss. There was no tongue, but it lasted a bit longer than a plutonic aunt-like kiss would have. I looked over at Peter, who watched us.
“I’ve got to head to a meeting in town,” Delia said, moving towards the steps. “I’ll be back around dinner time. You and Kat can come up with something for us to eat, can’t you?”
“Sure Delia,” Peter said.
“No problem,” I said.
We swam around a little bit. Peter was wearing board shorts, but I noticed how muscular his chest had become – and how much chest hair he had.
“What are you looking at?” he said.
“Oh! Nothing,” I said, embarrassed.
“That’s quite the suit,” he said, eyeing me up and down. “Would Mom approve?”
Peter had no idea that Mom and I were having incredible lesbian sex, and lots of it, at my new apartment near school.
“Why not?” I said, looking down at my suit.
“Well, I guess you’re right,” Peter said. “You guys have gotten awfully close lately.”
That was an odd remark. Had Peter suspected something?
“Peter, Mom was the one who bought me the suit,” I said.
“There you go,” Peter said, and swam off.